---
_id: '995'
abstract:
- lang: eng
text: Recently it was shown that an impurity exchanging orbital angular momentum
with a surrounding bath can be described in terms of the angulon quasiparticle
[Phys. Rev. Lett. 118, 095301 (2017)]. The angulon consists of a quantum rotor
dressed by a many-particle field of boson excitations, and can be formed out of,
for example, a molecule or a nonspherical atom in superfluid helium, or out of
an electron coupled to lattice phonons or a Bose condensate. Here we develop an
approach to the angulon based on the path-integral formalism, which sets the ground
for a systematic, perturbative treatment of the angulon problem. The resulting
perturbation series can be interpreted in terms of Feynman diagrams, from which,
in turn, one can derive a set of diagrammatic rules. These rules extend the machinery
of the graphical theory of angular momentum - well known from theoretical atomic
spectroscopy - to the case where an environment with an infinite number of degrees
of freedom is present. In particular, we show that each diagram can be interpreted
as a 'skeleton', which enforces angular momentum conservation, dressed by an additional
many-body contribution. This connection between the angulon theory and the graphical
theory of angular momentum is particularly important as it allows to systematically
and substantially simplify the analytical representation of each diagram. In order
to exemplify the technique, we calculate the 1- and 2-loop contributions to the
angulon self-energy, the spectral function, and the quasiparticle weight. The
diagrammatic theory we develop paves the way to investigate next-to-leading order
quantities in a more compact way compared to the variational approaches.
article_number: '085410'
article_processing_charge: No
author:
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Bighin G, Lemeshko M. Diagrammatic approach to orbital quantum impurities interacting
with a many-particle environment. Physical Review B - Condensed Matter and
Materials Physics. 2017;96(8). doi:10.1103/PhysRevB.96.085410
apa: Bighin, G., & Lemeshko, M. (2017). Diagrammatic approach to orbital quantum
impurities interacting with a many-particle environment. Physical Review B
- Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.96.085410
chicago: Bighin, Giacomo, and Mikhail Lemeshko. “Diagrammatic Approach to Orbital
Quantum Impurities Interacting with a Many-Particle Environment.” Physical
Review B - Condensed Matter and Materials Physics. American Physical Society,
2017. https://doi.org/10.1103/PhysRevB.96.085410.
ieee: G. Bighin and M. Lemeshko, “Diagrammatic approach to orbital quantum impurities
interacting with a many-particle environment,” Physical Review B - Condensed
Matter and Materials Physics, vol. 96, no. 8. American Physical Society, 2017.
ista: Bighin G, Lemeshko M. 2017. Diagrammatic approach to orbital quantum impurities
interacting with a many-particle environment. Physical Review B - Condensed Matter
and Materials Physics. 96(8), 085410.
mla: Bighin, Giacomo, and Mikhail Lemeshko. “Diagrammatic Approach to Orbital Quantum
Impurities Interacting with a Many-Particle Environment.” Physical Review B
- Condensed Matter and Materials Physics, vol. 96, no. 8, 085410, American
Physical Society, 2017, doi:10.1103/PhysRevB.96.085410.
short: G. Bighin, M. Lemeshko, Physical Review B - Condensed Matter and Materials
Physics 96 (2017).
date_created: 2018-12-11T11:49:36Z
date_published: 2017-08-07T00:00:00Z
date_updated: 2023-09-22T09:53:17Z
day: '07'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.96.085410
external_id:
isi:
- '000407017100009'
intvolume: ' 96'
isi: 1
issue: '8'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1704.02616
month: '08'
oa: 1
oa_version: Submitted Version
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review B - Condensed Matter and Materials Physics
publication_identifier:
issn:
- '24699950'
publication_status: published
publisher: American Physical Society
publist_id: '6404'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Diagrammatic approach to orbital quantum impurities interacting with a many-particle
environment
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 96
year: '2017'
...
---
_id: '996'
abstract:
- lang: eng
text: 'Iodine (I 2 ) molecules embedded in He nanodroplets are aligned by a 160
ps long laser pulse. The highest degree of alignment, occurring at the peak of
the pulse and quantified by ⟨cos 2 θ 2D ⟩ , is measured as a function of the laser
intensity. The results are well described by ⟨cos 2 θ 2D ⟩ calculated for a gas
of isolated molecules each with an effective rotational constant of 0.6 times
the gas-phase value, and at a temperature of 0.4 K. Theoretical analysis using
the angulon quasiparticle to describe rotating molecules in superfluid helium
rationalizes why the alignment mechanism is similar to that of isolated molecules
with an effective rotational constant. A major advantage of molecules in He droplets
is that their 0.4 K temperature leads to stronger alignment than what can generally
be achieved for gas phase molecules -- here demonstrated by a direct comparison
of the droplet results to measurements on a ∼ 1 K supersonic beam of isolated
molecules. This point is further illustrated for more complex system by measurements
on 1,4-diiodobenzene and 1,4-dibromobenzene. For all three molecular species studied
the highest values of ⟨cos 2 θ 2D ⟩ achieved in He droplets exceed 0.96. '
article_number: '013946'
article_processing_charge: No
author:
- first_name: Benjamin
full_name: Shepperson, Benjamin
last_name: Shepperson
- first_name: Adam
full_name: Chatterley, Adam
last_name: Chatterley
- first_name: Anders
full_name: Søndergaard, Anders
last_name: Søndergaard
- first_name: Lars
full_name: Christiansen, Lars
last_name: Christiansen
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Henrik
full_name: Stapelfeldt, Henrik
last_name: Stapelfeldt
citation:
ama: Shepperson B, Chatterley A, Søndergaard A, Christiansen L, Lemeshko M, Stapelfeldt
H. Strongly aligned molecules inside helium droplets in the near-adiabatic regime.
The Journal of Chemical Physics. 2017;147(1). doi:10.1063/1.4983703
apa: Shepperson, B., Chatterley, A., Søndergaard, A., Christiansen, L., Lemeshko,
M., & Stapelfeldt, H. (2017). Strongly aligned molecules inside helium droplets
in the near-adiabatic regime. The Journal of Chemical Physics. AIP Publishing.
https://doi.org/10.1063/1.4983703
chicago: Shepperson, Benjamin, Adam Chatterley, Anders Søndergaard, Lars Christiansen,
Mikhail Lemeshko, and Henrik Stapelfeldt. “Strongly Aligned Molecules inside Helium
Droplets in the Near-Adiabatic Regime.” The Journal of Chemical Physics.
AIP Publishing, 2017. https://doi.org/10.1063/1.4983703.
ieee: B. Shepperson, A. Chatterley, A. Søndergaard, L. Christiansen, M. Lemeshko,
and H. Stapelfeldt, “Strongly aligned molecules inside helium droplets in the
near-adiabatic regime,” The Journal of Chemical Physics, vol. 147, no.
1. AIP Publishing, 2017.
ista: Shepperson B, Chatterley A, Søndergaard A, Christiansen L, Lemeshko M, Stapelfeldt
H. 2017. Strongly aligned molecules inside helium droplets in the near-adiabatic
regime. The Journal of Chemical Physics. 147(1), 013946.
mla: Shepperson, Benjamin, et al. “Strongly Aligned Molecules inside Helium Droplets
in the Near-Adiabatic Regime.” The Journal of Chemical Physics, vol. 147,
no. 1, 013946, AIP Publishing, 2017, doi:10.1063/1.4983703.
short: B. Shepperson, A. Chatterley, A. Søndergaard, L. Christiansen, M. Lemeshko,
H. Stapelfeldt, The Journal of Chemical Physics 147 (2017).
date_created: 2018-12-11T11:49:36Z
date_published: 2017-06-01T00:00:00Z
date_updated: 2024-02-28T13:02:26Z
day: '01'
department:
- _id: MiLe
doi: 10.1063/1.4983703
external_id:
isi:
- '000405089400047'
intvolume: ' 147'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1704.03684
month: '06'
oa: 1
oa_version: Submitted Version
publication: The Journal of Chemical Physics
publication_identifier:
issn:
- '00219606'
publication_status: published
publisher: AIP Publishing
publist_id: '6403'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Strongly aligned molecules inside helium droplets in the near-adiabatic regime
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 147
year: '2017'
...
---
_id: '997'
abstract:
- lang: eng
text: Recently it was shown that molecules rotating in superfluid helium can be
described in terms of the angulon quasiparticles (Phys. Rev. Lett. 118, 095301
(2017)). Here we demonstrate that in the experimentally realized regime the angulon
can be seen as a point charge on a 2-sphere interacting with a gauge field of
a non-abelian magnetic monopole. Unlike in several other settings, the gauge fields
of the angulon problem emerge in the real coordinate space, as opposed to the
momentum space or some effective parameter space. Furthermore, we find a topological
transition associated with making the monopole abelian, which takes place in the
vicinity of the previously reported angulon instabilities. These results pave
the way for studying topological phenomena in experiments on molecules trapped
in superfluid helium nanodroplets, as well as on other realizations of orbital
impurity problems.
article_number: '235301'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Andreas
full_name: Deuchert, Andreas
id: 4DA65CD0-F248-11E8-B48F-1D18A9856A87
last_name: Deuchert
orcid: 0000-0003-3146-6746
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Yakaboylu E, Deuchert A, Lemeshko M. Emergence of non-abelian magnetic monopoles
in a quantum impurity problem. Physical Review Letters. 2017;119(23). doi:10.1103/PhysRevLett.119.235301
apa: Yakaboylu, E., Deuchert, A., & Lemeshko, M. (2017). Emergence of non-abelian
magnetic monopoles in a quantum impurity problem. Physical Review Letters.
American Physical Society. https://doi.org/10.1103/PhysRevLett.119.235301
chicago: Yakaboylu, Enderalp, Andreas Deuchert, and Mikhail Lemeshko. “Emergence
of Non-Abelian Magnetic Monopoles in a Quantum Impurity Problem.” Physical
Review Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.119.235301.
ieee: E. Yakaboylu, A. Deuchert, and M. Lemeshko, “Emergence of non-abelian magnetic
monopoles in a quantum impurity problem,” Physical Review Letters, vol.
119, no. 23. American Physical Society, 2017.
ista: Yakaboylu E, Deuchert A, Lemeshko M. 2017. Emergence of non-abelian magnetic
monopoles in a quantum impurity problem. Physical Review Letters. 119(23), 235301.
mla: Yakaboylu, Enderalp, et al. “Emergence of Non-Abelian Magnetic Monopoles in
a Quantum Impurity Problem.” Physical Review Letters, vol. 119, no. 23,
235301, American Physical Society, 2017, doi:10.1103/PhysRevLett.119.235301.
short: E. Yakaboylu, A. Deuchert, M. Lemeshko, Physical Review Letters 119 (2017).
date_created: 2018-12-11T11:49:36Z
date_published: 2017-12-06T00:00:00Z
date_updated: 2023-10-10T13:31:54Z
day: '06'
department:
- _id: MiLe
- _id: RoSe
doi: 10.1103/PhysRevLett.119.235301
ec_funded: 1
external_id:
arxiv:
- '1705.05162'
isi:
- '000417132100007'
intvolume: ' 119'
isi: 1
issue: '23'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1705.05162
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694227'
name: Analysis of quantum many-body systems
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review Letters
publication_identifier:
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
publist_id: '6401'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Emergence of non-abelian magnetic monopoles in a quantum impurity problem
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 119
year: '2017'
...
---
_id: '1109'
abstract:
- lang: eng
text: 'Rotation of molecules embedded in He nanodroplets is explored by a combination
of fs laser-induced alignment experiments and angulon quasiparticle theory. We
demonstrate that at low fluence of the fs alignment pulse, the molecule and its
solvation shell can be set into coherent collective rotation lasting long enough
to form revivals. With increasing fluence, however, the revivals disappear --
instead, rotational dynamics as rapid as for an isolated molecule is observed
during the first few picoseconds. Classical calculations trace this phenomenon
to transient decoupling of the molecule from its He shell. Our results open novel
opportunities for studying non-equilibrium solute-solvent dynamics and quantum
thermalization. '
article_number: '203203'
article_processing_charge: No
author:
- first_name: Benjamin
full_name: Shepperson, Benjamin
last_name: Shepperson
- first_name: Anders
full_name: Søndergaard, Anders
last_name: Søndergaard
- first_name: Lars
full_name: Christiansen, Lars
last_name: Christiansen
- first_name: Jan
full_name: Kaczmarczyk, Jan
id: 46C405DE-F248-11E8-B48F-1D18A9856A87
last_name: Kaczmarczyk
orcid: 0000-0002-1629-3675
- first_name: Robert
full_name: Zillich, Robert
last_name: Zillich
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Henrik
full_name: Stapelfeldt, Henrik
last_name: Stapelfeldt
citation:
ama: 'Shepperson B, Søndergaard A, Christiansen L, et al. Laser-induced rotation
of iodine molecules in helium nanodroplets: Revivals and breaking-free. Physical
Review Letters. 2017;118(20). doi:10.1103/PhysRevLett.118.203203'
apa: 'Shepperson, B., Søndergaard, A., Christiansen, L., Kaczmarczyk, J., Zillich,
R., Lemeshko, M., & Stapelfeldt, H. (2017). Laser-induced rotation of iodine
molecules in helium nanodroplets: Revivals and breaking-free. Physical Review
Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.118.203203'
chicago: 'Shepperson, Benjamin, Anders Søndergaard, Lars Christiansen, Jan Kaczmarczyk,
Robert Zillich, Mikhail Lemeshko, and Henrik Stapelfeldt. “Laser-Induced Rotation
of Iodine Molecules in Helium Nanodroplets: Revivals and Breaking-Free.” Physical
Review Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.118.203203.'
ieee: 'B. Shepperson et al., “Laser-induced rotation of iodine molecules
in helium nanodroplets: Revivals and breaking-free,” Physical Review Letters,
vol. 118, no. 20. American Physical Society, 2017.'
ista: 'Shepperson B, Søndergaard A, Christiansen L, Kaczmarczyk J, Zillich R, Lemeshko
M, Stapelfeldt H. 2017. Laser-induced rotation of iodine molecules in helium nanodroplets:
Revivals and breaking-free. Physical Review Letters. 118(20), 203203.'
mla: 'Shepperson, Benjamin, et al. “Laser-Induced Rotation of Iodine Molecules in
Helium Nanodroplets: Revivals and Breaking-Free.” Physical Review Letters,
vol. 118, no. 20, 203203, American Physical Society, 2017, doi:10.1103/PhysRevLett.118.203203.'
short: B. Shepperson, A. Søndergaard, L. Christiansen, J. Kaczmarczyk, R. Zillich,
M. Lemeshko, H. Stapelfeldt, Physical Review Letters 118 (2017).
date_created: 2018-12-11T11:50:12Z
date_published: 2017-05-19T00:00:00Z
date_updated: 2023-09-20T11:36:17Z
day: '19'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.118.203203
external_id:
isi:
- '000401664000005'
intvolume: ' 118'
isi: 1
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1702.01977
month: '05'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '6260'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals
and breaking-free'
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 118
year: '2017'
...
---
_id: '1119'
abstract:
- lang: eng
text: Understanding the behavior of molecules interacting with superfluid helium
represents a formidable challenge and, in general, requires approaches relying
on large-scale numerical simulations. Here we demonstrate that experimental data
collected over the last 20 years provide evidence that molecules immersed in superfluid
helium form recently-predicted angulon quasiparticles [Phys. Rev. Lett. 114, 203001
(2015)]. Most importantly, casting the many-body problem in terms of angulons
amounts to a drastic simplification and yields effective molecular moments of
inertia as straightforward analytic solutions of a simple microscopic Hamiltonian.
The outcome of the angulon theory is in good agreement with experiment for a broad
range of molecular impurities, from heavy to medium-mass to light species. These
results pave the way to understanding molecular rotation in liquid and crystalline
phases in terms of the angulon quasiparticle.
article_number: '095301'
article_processing_charge: No
author:
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Lemeshko M. Quasiparticle approach to molecules interacting with quantum solvents.
Physical Review Letters. 2017;118(9). doi:10.1103/PhysRevLett.118.095301
apa: Lemeshko, M. (2017). Quasiparticle approach to molecules interacting with quantum
solvents. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.118.095301
chicago: Lemeshko, Mikhail. “Quasiparticle Approach to Molecules Interacting with
Quantum Solvents.” Physical Review Letters. American Physical Society,
2017. https://doi.org/10.1103/PhysRevLett.118.095301.
ieee: M. Lemeshko, “Quasiparticle approach to molecules interacting with quantum
solvents,” Physical Review Letters, vol. 118, no. 9. American Physical
Society, 2017.
ista: Lemeshko M. 2017. Quasiparticle approach to molecules interacting with quantum
solvents. Physical Review Letters. 118(9), 095301.
mla: Lemeshko, Mikhail. “Quasiparticle Approach to Molecules Interacting with Quantum
Solvents.” Physical Review Letters, vol. 118, no. 9, 095301, American Physical
Society, 2017, doi:10.1103/PhysRevLett.118.095301.
short: M. Lemeshko, Physical Review Letters 118 (2017).
date_created: 2018-12-11T11:50:15Z
date_published: 2017-02-27T00:00:00Z
date_updated: 2023-09-20T11:31:22Z
day: '27'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.118.095301
external_id:
isi:
- '000404769200006'
intvolume: ' 118'
isi: 1
issue: '9'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1610.01604
month: '02'
oa: 1
oa_version: Submitted Version
project:
- _id: 25636330-B435-11E9-9278-68D0E5697425
grant_number: 11-NSF-1070
name: ROOTS Genome-wide Analysis of Root Traits
publication: Physical Review Letters
publication_identifier:
issn:
- '00319007'
publication_status: published
publisher: American Physical Society
publist_id: '6243'
quality_controlled: '1'
status: public
title: Quasiparticle approach to molecules interacting with quantum solvents
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 118
year: '2017'
...
---
_id: '1120'
abstract:
- lang: eng
text: 'The existence of a self-localization transition in the polaron problem has
been under an active debate ever since Landau suggested it 83 years ago. Here
we reveal the self-localization transition for the rotational analogue of the
polaron -- the angulon quasiparticle. We show that, unlike for the polarons, self-localization
of angulons occurs at finite impurity-bath coupling already at the mean-field
level. The transition is accompanied by the spherical-symmetry breaking of the
angulon ground state and a discontinuity in the first derivative of the ground-state
energy. Moreover, the type of the symmetry breaking is dictated by the symmetry
of the microscopic impurity-bath interaction, which leads to a number of distinct
self-localized states. The predicted effects can potentially be addressed in experiments
on cold molecules trapped in superfluid helium droplets and ultracold quantum
gases, as well as on electronic excitations in solids and Bose-Einstein condensates. '
article_number: '033608'
article_processing_charge: No
author:
- first_name: Xiang
full_name: Li, Xiang
id: 4B7E523C-F248-11E8-B48F-1D18A9856A87
last_name: Li
- first_name: Robert
full_name: Seiringer, Robert
id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
last_name: Seiringer
orcid: 0000-0002-6781-0521
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Li X, Seiringer R, Lemeshko M. Angular self-localization of impurities rotating
in a bosonic bath. Physical Review A. 2017;95(3). doi:10.1103/PhysRevA.95.033608
apa: Li, X., Seiringer, R., & Lemeshko, M. (2017). Angular self-localization
of impurities rotating in a bosonic bath. Physical Review A. American Physical
Society. https://doi.org/10.1103/PhysRevA.95.033608
chicago: Li, Xiang, Robert Seiringer, and Mikhail Lemeshko. “Angular Self-Localization
of Impurities Rotating in a Bosonic Bath.” Physical Review A. American
Physical Society, 2017. https://doi.org/10.1103/PhysRevA.95.033608.
ieee: X. Li, R. Seiringer, and M. Lemeshko, “Angular self-localization of impurities
rotating in a bosonic bath,” Physical Review A, vol. 95, no. 3. American
Physical Society, 2017.
ista: Li X, Seiringer R, Lemeshko M. 2017. Angular self-localization of impurities
rotating in a bosonic bath. Physical Review A. 95(3), 033608.
mla: Li, Xiang, et al. “Angular Self-Localization of Impurities Rotating in a Bosonic
Bath.” Physical Review A, vol. 95, no. 3, 033608, American Physical Society,
2017, doi:10.1103/PhysRevA.95.033608.
short: X. Li, R. Seiringer, M. Lemeshko, Physical Review A 95 (2017).
date_created: 2018-12-11T11:50:15Z
date_published: 2017-03-06T00:00:00Z
date_updated: 2023-09-20T11:30:58Z
day: '06'
department:
- _id: MiLe
- _id: RoSe
doi: 10.1103/PhysRevA.95.033608
ec_funded: 1
external_id:
isi:
- '000395981900009'
intvolume: ' 95'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1610.04908
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694227'
name: Analysis of quantum many-body systems
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P27533_N27
name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review A
publication_identifier:
issn:
- '24699926'
publication_status: published
publisher: American Physical Society
publist_id: '6242'
quality_controlled: '1'
related_material:
record:
- id: '8958'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Angular self-localization of impurities rotating in a bosonic bath
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 95
year: '2017'
...
---
_id: '1133'
abstract:
- lang: eng
text: 'It is a common knowledge that an effective interaction of a quantum impurity
with an electromagnetic field can be screened by surrounding charge carriers,
whether mobile or static. Here we demonstrate that very strong, "anomalous" screening
can take place in the presence of a neutral, weakly polarizable environment, due
to an exchange of orbital angular momentum between the impurity and the bath.
Furthermore, we show that it is possible to generalize all phenomena related to
isolated impurities in an external field to the case when a many-body environment
is present, by casting the problem in terms of the angulon quasiparticle. As a
result, the relevant observables such as the effective Rabi frequency, geometric
phase, and impurity spatial alignment are straightforward to evaluate in terms
of a single parameter: the angular-momentum-dependent screening factor.'
article_number: '085302'
article_processing_charge: No
author:
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Yakaboylu E, Lemeshko M. Anomalous screening of quantum impurities by a neutral
environment. Physical Review Letters. 2017;118(8). doi:10.1103/PhysRevLett.118.085302
apa: Yakaboylu, E., & Lemeshko, M. (2017). Anomalous screening of quantum impurities
by a neutral environment. Physical Review Letters. American Physical Society.
https://doi.org/10.1103/PhysRevLett.118.085302
chicago: Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anomalous Screening of Quantum
Impurities by a Neutral Environment.” Physical Review Letters. American
Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.118.085302.
ieee: E. Yakaboylu and M. Lemeshko, “Anomalous screening of quantum impurities by
a neutral environment,” Physical Review Letters, vol. 118, no. 8. American
Physical Society, 2017.
ista: Yakaboylu E, Lemeshko M. 2017. Anomalous screening of quantum impurities by
a neutral environment. Physical Review Letters. 118(8), 085302.
mla: Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anomalous Screening of Quantum
Impurities by a Neutral Environment.” Physical Review Letters, vol. 118,
no. 8, 085302, American Physical Society, 2017, doi:10.1103/PhysRevLett.118.085302.
short: E. Yakaboylu, M. Lemeshko, Physical Review Letters 118 (2017).
date_created: 2018-12-11T11:50:19Z
date_published: 2017-02-22T00:00:00Z
date_updated: 2023-09-20T11:30:08Z
day: '22'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.118.085302
ec_funded: 1
external_id:
isi:
- '000394667600003'
intvolume: ' 118'
isi: 1
issue: '8'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1612.02820
month: '02'
oa: 1
oa_version: Submitted Version
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review Letters
publication_identifier:
issn:
- '00319007'
publication_status: published
publisher: American Physical Society
publist_id: '6225'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Anomalous screening of quantum impurities by a neutral environment
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 118
year: '2017'
...
---
_id: '1162'
abstract:
- lang: eng
text: Selected universal experimental properties of high-temperature superconducting
(HTS) cuprates have been singled out in the last decade. One of the pivotal challenges
in this field is the designation of a consistent interpretation framework within
which we can describe quantitatively the universal features of those systems.
Here we analyze in a detailed manner the principal experimental data and compare
them quantitatively with the approach based on a single-band model of strongly
correlated electrons supplemented with strong antiferromagnetic (super)exchange
interaction (the so-called t−J−U model). The model rationale is provided by estimating
its microscopic parameters on the basis of the three-band approach for the Cu-O
plane. We use our original full Gutzwiller wave-function solution by going beyond
the renormalized mean-field theory (RMFT) in a systematic manner. Our approach
reproduces very well the observed hole doping (δ) dependence of the kinetic-energy
gain in the superconducting phase, one of the principal non-Bardeen-Cooper-Schrieffer
features of the cuprates. The calculated Fermi velocity in the nodal direction
is practically δ-independent and its universal value agrees very well with that
determined experimentally. Also, a weak doping dependence of the Fermi wave vector
leads to an almost constant value of the effective mass in a pure superconducting
phase which is both observed in experiment and reproduced within our approach.
An assessment of the currently used models (t−J, Hubbard) is carried out and the
results of the canonical RMFT as a zeroth-order solution are provided for comparison
to illustrate the necessity of the introduced higher-order contributions.
article_number: '024506'
article_processing_charge: No
author:
- first_name: Jozef
full_name: Spałek, Jozef
last_name: Spałek
- first_name: Michał
full_name: Zegrodnik, Michał
last_name: Zegrodnik
- first_name: Jan
full_name: Kaczmarczyk, Jan
id: 46C405DE-F248-11E8-B48F-1D18A9856A87
last_name: Kaczmarczyk
orcid: 0000-0002-1629-3675
citation:
ama: Spałek J, Zegrodnik M, Kaczmarczyk J. Universal properties of high temperature
superconductors from real space pairing t-J-U model and its quantitative comparison
with experiment. Physical Review B - Condensed Matter and Materials Physics.
2017;95(2). doi:10.1103/PhysRevB.95.024506
apa: Spałek, J., Zegrodnik, M., & Kaczmarczyk, J. (2017). Universal properties
of high temperature superconductors from real space pairing t-J-U model and its
quantitative comparison with experiment. Physical Review B - Condensed Matter
and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.95.024506
chicago: Spałek, Jozef, Michał Zegrodnik, and Jan Kaczmarczyk. “Universal Properties
of High Temperature Superconductors from Real Space Pairing T-J-U Model and Its
Quantitative Comparison with Experiment.” Physical Review B - Condensed Matter
and Materials Physics. American Physical Society, 2017. https://doi.org/10.1103/PhysRevB.95.024506.
ieee: J. Spałek, M. Zegrodnik, and J. Kaczmarczyk, “Universal properties of high
temperature superconductors from real space pairing t-J-U model and its quantitative
comparison with experiment,” Physical Review B - Condensed Matter and Materials
Physics, vol. 95, no. 2. American Physical Society, 2017.
ista: Spałek J, Zegrodnik M, Kaczmarczyk J. 2017. Universal properties of high temperature
superconductors from real space pairing t-J-U model and its quantitative comparison
with experiment. Physical Review B - Condensed Matter and Materials Physics. 95(2),
024506.
mla: Spałek, Jozef, et al. “Universal Properties of High Temperature Superconductors
from Real Space Pairing T-J-U Model and Its Quantitative Comparison with Experiment.”
Physical Review B - Condensed Matter and Materials Physics, vol. 95, no.
2, 024506, American Physical Society, 2017, doi:10.1103/PhysRevB.95.024506.
short: J. Spałek, M. Zegrodnik, J. Kaczmarczyk, Physical Review B - Condensed Matter
and Materials Physics 95 (2017).
date_created: 2018-12-11T11:50:29Z
date_published: 2017-01-13T00:00:00Z
date_updated: 2023-09-20T11:25:56Z
day: '13'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.95.024506
ec_funded: 1
external_id:
isi:
- '000391852800006'
intvolume: ' 95'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1606.03247
month: '01'
oa: 1
oa_version: Submitted Version
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Physical Review B - Condensed Matter and Materials Physics
publication_identifier:
issn:
- '24699950'
publication_status: published
publisher: American Physical Society
publist_id: '6195'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Universal properties of high temperature superconductors from real space pairing
t-J-U model and its quantitative comparison with experiment
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 95
year: '2017'
...
---
_id: '1163'
abstract:
- lang: eng
text: 'We investigate the effect of the electron-hole (e-h) symmetry breaking on
d-wave superconductivity induced by non-local effects of correlations in the generalized
Hubbard model. The symmetry breaking is introduced in a two-fold manner: by the
next-to-nearest neighbor hopping of electrons and by the charge-bond interaction
- the off-diagonal term of the Coulomb potential. Both terms lead to a pronounced
asymmetry of the superconducting order parameter. The next-to-nearest neighbor
hopping enhances superconductivity for h-doping, while diminishes it for e-doping.
The charge-bond interaction alone leads to the opposite effect and, additionally,
to the kinetic-energy gain upon condensation in the underdoped regime. With both
terms included, with similar amplitudes, the height of the superconducting dome
and the critical doping remain in favor of h-doping. The influence of the charge-bond
interaction on deviations from symmetry of the shape of the gap at the Fermi surface
in the momentum space is briefly discussed.'
article_number: '085604'
article_processing_charge: No
author:
- first_name: Marcin
full_name: Wysokiński, Marcin
last_name: Wysokiński
- first_name: Jan
full_name: Kaczmarczyk, Jan
id: 46C405DE-F248-11E8-B48F-1D18A9856A87
last_name: Kaczmarczyk
orcid: 0000-0002-1629-3675
citation:
ama: 'Wysokiński M, Kaczmarczyk J. Unconventional superconductivity in generalized
Hubbard model role of electron–hole symmetry breaking terms. Journal of Physics:
Condensed Matter. 2017;29(8). doi:10.1088/1361-648X/aa532f'
apa: 'Wysokiński, M., & Kaczmarczyk, J. (2017). Unconventional superconductivity
in generalized Hubbard model role of electron–hole symmetry breaking terms. Journal
of Physics: Condensed Matter. IOP Publishing Ltd. https://doi.org/10.1088/1361-648X/aa532f'
chicago: 'Wysokiński, Marcin, and Jan Kaczmarczyk. “Unconventional Superconductivity
in Generalized Hubbard Model Role of Electron–Hole Symmetry Breaking Terms.” Journal
of Physics: Condensed Matter. IOP Publishing Ltd., 2017. https://doi.org/10.1088/1361-648X/aa532f.'
ieee: 'M. Wysokiński and J. Kaczmarczyk, “Unconventional superconductivity in generalized
Hubbard model role of electron–hole symmetry breaking terms,” Journal of Physics:
Condensed Matter, vol. 29, no. 8. IOP Publishing Ltd., 2017.'
ista: 'Wysokiński M, Kaczmarczyk J. 2017. Unconventional superconductivity in generalized
Hubbard model role of electron–hole symmetry breaking terms. Journal of Physics:
Condensed Matter. 29(8), 085604.'
mla: 'Wysokiński, Marcin, and Jan Kaczmarczyk. “Unconventional Superconductivity
in Generalized Hubbard Model Role of Electron–Hole Symmetry Breaking Terms.” Journal
of Physics: Condensed Matter, vol. 29, no. 8, 085604, IOP Publishing Ltd.,
2017, doi:10.1088/1361-648X/aa532f.'
short: 'M. Wysokiński, J. Kaczmarczyk, Journal of Physics: Condensed Matter 29 (2017).'
date_created: 2018-12-11T11:50:29Z
date_published: 2017-01-16T00:00:00Z
date_updated: 2023-09-20T11:25:32Z
day: '16'
department:
- _id: MiLe
doi: 10.1088/1361-648X/aa532f
ec_funded: 1
external_id:
isi:
- '000393955500001'
intvolume: ' 29'
isi: 1
issue: '8'
language:
- iso: eng
month: '01'
oa_version: None
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: 'Journal of Physics: Condensed Matter'
publication_identifier:
issn:
- '09538984'
publication_status: published
publisher: IOP Publishing Ltd.
publist_id: '6194'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Unconventional superconductivity in generalized Hubbard model role of electron–hole
symmetry breaking terms
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 29
year: '2017'
...
---
_id: '313'
abstract:
- lang: eng
text: 'Tunneling of a particle through a potential barrier remains one of the most
remarkable quantum phenomena. Owing to advances in laser technology, electric
fields comparable to those electrons experience in atoms are readily generated
and open opportunities to dynamically investigate the process of electron tunneling
through the potential barrier formed by the superposition of both laser and atomic
fields. Attosecond-time and angstrom-space resolution of the strong laser-field
technique allow to address fundamental questions related to tunneling, which are
still open and debated: Which time is spent under the barrier and what momentum
is picked up by the particle in the meantime? In this combined experimental and
theoretical study we demonstrate that for strong-field ionization the leading
quantum mechanical Wigner treatment for the time resolved description of tunneling
is valid. We achieve a high sensitivity on the tunneling barrier and unambiguously
isolate its effects by performing a differential study of two systems with almost
identical tunneling geometry. Moreover, working with a low frequency laser, we
essentially limit the non-adiabaticity of the process as a major source of uncertainty.
The agreement between experiment and theory implies two substantial corrections
with respect to the widely employed quasiclassical treatment: In addition to a
non-vanishing longitudinal momentum along the laser field-direction we provide
clear evidence for a non-zero tunneling time delay. This addresses also the fundamental
question how the transition occurs from the tunnel barrier to free space classical
evolution of the ejected electron.'
alternative_title:
- 'Journal of Physics: Conference Series'
article_number: '012004'
arxiv: 1
author:
- first_name: Nicolas
full_name: Camus, Nicolas
last_name: Camus
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Lutz
full_name: Fechner, Lutz
last_name: Fechner
- first_name: Michael
full_name: Klaiber, Michael
last_name: Klaiber
- first_name: Martin
full_name: Laux, Martin
last_name: Laux
- first_name: Yonghao
full_name: Mi, Yonghao
last_name: Mi
- first_name: Karen
full_name: Hatsagortsyan, Karen
last_name: Hatsagortsyan
- first_name: Thomas
full_name: Pfeifer, Thomas
last_name: Pfeifer
- first_name: Cristoph
full_name: Keitel, Cristoph
last_name: Keitel
- first_name: Robert
full_name: Moshammer, Robert
last_name: Moshammer
citation:
ama: 'Camus N, Yakaboylu E, Fechner L, et al. Experimental evidence for Wigner’s
tunneling time. In: Vol 999. American Physical Society; 2017. doi:10.1088/1742-6596/999/1/012004'
apa: 'Camus, N., Yakaboylu, E., Fechner, L., Klaiber, M., Laux, M., Mi, Y., … Moshammer,
R. (2017). Experimental evidence for Wigner’s tunneling time (Vol. 999). Presented
at the Annual International Laser Physics Workshop LPHYS, Kazan, Russian Federation:
American Physical Society. https://doi.org/10.1088/1742-6596/999/1/012004'
chicago: Camus, Nicolas, Enderalp Yakaboylu, Lutz Fechner, Michael Klaiber, Martin
Laux, Yonghao Mi, Karen Hatsagortsyan, Thomas Pfeifer, Cristoph Keitel, and Robert
Moshammer. “Experimental Evidence for Wigner’s Tunneling Time,” Vol. 999. American
Physical Society, 2017. https://doi.org/10.1088/1742-6596/999/1/012004.
ieee: N. Camus et al., “Experimental evidence for Wigner’s tunneling time,”
presented at the Annual International Laser Physics Workshop LPHYS, Kazan, Russian
Federation, 2017, vol. 999, no. 1.
ista: 'Camus N, Yakaboylu E, Fechner L, Klaiber M, Laux M, Mi Y, Hatsagortsyan K,
Pfeifer T, Keitel C, Moshammer R. 2017. Experimental evidence for Wigner’s tunneling
time. Annual International Laser Physics Workshop LPHYS, Journal of Physics: Conference
Series, vol. 999, 012004.'
mla: Camus, Nicolas, et al. Experimental Evidence for Wigner’s Tunneling Time.
Vol. 999, no. 1, 012004, American Physical Society, 2017, doi:10.1088/1742-6596/999/1/012004.
short: N. Camus, E. Yakaboylu, L. Fechner, M. Klaiber, M. Laux, Y. Mi, K. Hatsagortsyan,
T. Pfeifer, C. Keitel, R. Moshammer, in:, American Physical Society, 2017.
conference:
end_date: 2017-08-21
location: Kazan, Russian Federation
name: Annual International Laser Physics Workshop LPHYS
start_date: 2017-08-17
date_created: 2018-12-11T11:45:46Z
date_published: 2017-07-14T00:00:00Z
date_updated: 2023-02-23T12:36:07Z
day: '14'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1088/1742-6596/999/1/012004
external_id:
arxiv:
- '1611.03701'
file:
- access_level: open_access
checksum: 6e70b525a84f6d5fb175c48e9f5cb59a
content_type: application/pdf
creator: dernst
date_created: 2019-01-22T08:34:10Z
date_updated: 2020-07-14T12:46:00Z
file_id: '5871'
file_name: 2017_Physics_Camus.pdf
file_size: 949321
relation: main_file
file_date_updated: 2020-07-14T12:46:00Z
has_accepted_license: '1'
intvolume: ' 999'
issue: '1'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
publication_identifier:
issn:
- '17426588'
publication_status: published
publisher: American Physical Society
publist_id: '7552'
quality_controlled: '1'
related_material:
record:
- id: '6013'
relation: later_version
status: public
scopus_import: 1
status: public
title: Experimental evidence for Wigner's tunneling time
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 999
year: '2017'
...
---
_id: '1286'
abstract:
- lang: eng
text: We use recently developed angulon theory [R. Schmidt and M. Lemeshko, Phys.
Rev. Lett. 114, 203001 (2015)PRLTAO0031-900710.1103/PhysRevLett.114.203001] to
study the rotational spectrum of a cyanide molecular anion immersed into Bose-Einstein
condensates of rubidium and strontium. Based on ab initio potential energy surfaces,
we provide a detailed study of the rotational Lamb shift and many-body-induced
fine structure which arise due to dressing of molecular rotation by a field of
phonon excitations. We demonstrate that the magnitude of these effects is large
enough in order to be observed in modern experiments on cold molecular ions. Furthermore,
we introduce a novel method to construct pseudopotentials starting from the ab
initio potential energy surfaces, which provides a means to obtain effective coupling
constants for low-energy polaron models.
acknowledgement: The work was supported by the NSF through a grant for the Institute
for Theoretical Atomic, Molecular, and Optical Physics at Harvard University and
the Smithsonian Astrophysical Observatory. B.M. acknowledges financial support received
from the People Programme (Marie Curie Actions) of the European Union's Seventh
Framework Programme (FP7/2007-2013) under REA grant agreement No. 291734. M.T. acknowledges
support from the EU Marie Curie COFUND action (ICFOnest), the EU Grants ERC AdG
OSYRIS, FP7 SIQS and EQuaM, FETPROACT QUIC, the Spanish Ministry Grants FOQUS (FIS2013-46768-P)
and Severo Ochoa (SEV-2015-0522), Generalitat de Catalunya (SGR 874), Fundacio Cellex,
the National Science Centre (2015/19/D/ST4/02173), and the PL-Grid Infrastructure.
article_number: '041601'
author:
- first_name: Bikashkali
full_name: Midya, Bikashkali
id: 456187FC-F248-11E8-B48F-1D18A9856A87
last_name: Midya
- first_name: Michał
full_name: Tomza, Michał
last_name: Tomza
- first_name: Richard
full_name: Schmidt, Richard
last_name: Schmidt
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Midya B, Tomza M, Schmidt R, Lemeshko M. Rotation of cold molecular ions inside
a Bose-Einstein condensate. Physical Review A - Atomic, Molecular, and Optical
Physics. 2016;94(4). doi:10.1103/PhysRevA.94.041601
apa: Midya, B., Tomza, M., Schmidt, R., & Lemeshko, M. (2016). Rotation of cold
molecular ions inside a Bose-Einstein condensate. Physical Review A - Atomic,
Molecular, and Optical Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.94.041601
chicago: Midya, Bikashkali, Michał Tomza, Richard Schmidt, and Mikhail Lemeshko.
“Rotation of Cold Molecular Ions inside a Bose-Einstein Condensate.” Physical
Review A - Atomic, Molecular, and Optical Physics. American Physical Society,
2016. https://doi.org/10.1103/PhysRevA.94.041601.
ieee: B. Midya, M. Tomza, R. Schmidt, and M. Lemeshko, “Rotation of cold molecular
ions inside a Bose-Einstein condensate,” Physical Review A - Atomic, Molecular,
and Optical Physics, vol. 94, no. 4. American Physical Society, 2016.
ista: Midya B, Tomza M, Schmidt R, Lemeshko M. 2016. Rotation of cold molecular
ions inside a Bose-Einstein condensate. Physical Review A - Atomic, Molecular,
and Optical Physics. 94(4), 041601.
mla: Midya, Bikashkali, et al. “Rotation of Cold Molecular Ions inside a Bose-Einstein
Condensate.” Physical Review A - Atomic, Molecular, and Optical Physics,
vol. 94, no. 4, 041601, American Physical Society, 2016, doi:10.1103/PhysRevA.94.041601.
short: B. Midya, M. Tomza, R. Schmidt, M. Lemeshko, Physical Review A - Atomic,
Molecular, and Optical Physics 94 (2016).
date_created: 2018-12-11T11:51:09Z
date_published: 2016-10-13T00:00:00Z
date_updated: 2021-01-12T06:49:37Z
day: '13'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.94.041601
ec_funded: 1
intvolume: ' 94'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1607.06092
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Physical Review A - Atomic, Molecular, and Optical Physics
publication_status: published
publisher: American Physical Society
publist_id: '6030'
quality_controlled: '1'
scopus_import: 1
status: public
title: Rotation of cold molecular ions inside a Bose-Einstein condensate
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 94
year: '2016'
...
---
_id: '1287'
abstract:
- lang: eng
text: A planar waveguide with an impedance boundary, composed of nonperfect metallic
plates, and with passive or active dielectric filling, is considered. We show
the possibility of selective mode guiding and amplification when a homogeneous
pump is added to the dielectric and analyze differences in TE and TM mode propagation.
Such a non-conservative system is also shown to feature exceptional points for
specific and experimentally tunable parameters, which are described for a particular
case of transparent dielectric.
acknowledgement: The research of B.M. is supported by the People Programme (Marie
Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013)
under REA grant No. [291734].
article_processing_charge: No
author:
- first_name: Bikashkali
full_name: Midya, Bikashkali
id: 456187FC-F248-11E8-B48F-1D18A9856A87
last_name: Midya
- first_name: Vladimir
full_name: Konotop, Vladimir
last_name: Konotop
citation:
ama: Midya B, Konotop V. Modes and exceptional points in waveguides with impedance
boundary conditions. Optics Letters. 2016;41(20):4621-4624. doi:10.1364/OL.41.004621
apa: Midya, B., & Konotop, V. (2016). Modes and exceptional points in waveguides
with impedance boundary conditions. Optics Letters. Optica Publishing Group.
https://doi.org/10.1364/OL.41.004621
chicago: Midya, Bikashkali, and Vladimir Konotop. “Modes and Exceptional Points
in Waveguides with Impedance Boundary Conditions.” Optics Letters. Optica
Publishing Group, 2016. https://doi.org/10.1364/OL.41.004621.
ieee: B. Midya and V. Konotop, “Modes and exceptional points in waveguides with
impedance boundary conditions,” Optics Letters, vol. 41, no. 20. Optica
Publishing Group, pp. 4621–4624, 2016.
ista: Midya B, Konotop V. 2016. Modes and exceptional points in waveguides with
impedance boundary conditions. Optics Letters. 41(20), 4621–4624.
mla: Midya, Bikashkali, and Vladimir Konotop. “Modes and Exceptional Points in Waveguides
with Impedance Boundary Conditions.” Optics Letters, vol. 41, no. 20, Optica
Publishing Group, 2016, pp. 4621–24, doi:10.1364/OL.41.004621.
short: B. Midya, V. Konotop, Optics Letters 41 (2016) 4621–4624.
date_created: 2018-12-11T11:51:09Z
date_published: 2016-10-15T00:00:00Z
date_updated: 2023-10-17T12:16:24Z
day: '15'
department:
- _id: MiLe
doi: 10.1364/OL.41.004621
ec_funded: 1
intvolume: ' 41'
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1609.02863
month: '10'
oa: 1
oa_version: Preprint
page: 4621 - 4624
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Optics Letters
publication_status: published
publisher: Optica Publishing Group
publist_id: '6029'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Modes and exceptional points in waveguides with impedance boundary conditions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 41
year: '2016'
...
---
_id: '1496'
abstract:
- lang: eng
text: The two-photon 1s2 2s 2p 3P0 1s22s2 1S0 transition in berylliumlike ions is
theoretically investigated within a fully relativistic framework and a second-order
perturbation theory. We focus our analysis on how electron correlation, as well
as the negative-energy spectrum, can affect the forbidden E1M1 decay rate. For
this purpose, we include the electronic correlation via an effective local potential
and within a single configuration-state model. Due to its experimental interest,
evaluations of decay rates are performed for berylliumlike xenon and uranium.
We find that the negative-energy contribution can be neglected at the present
level of accuracy in the evaluation of the decay rate. On the other hand, if contributions
of electronic correlation are not carefully taken into account, it may change
the lifetime of the metastable state by up to 20%. By performing a full-relativistic
jj-coupling calculation, we found a decrease of the decay rate by two orders of
magnitude compared to non-relativistic LS-coupling calculations, for the selected
heavy ions.
acknowledgement: 'This research was supported in part by FCT, Portugal, through
Project No. PTDC/FIS/117606/2010, financed by the European Community Fund FEDER through the COMPETE. '
article_number: '032502'
author:
- first_name: Pedro
full_name: Amaro, Pedro
last_name: Amaro
- first_name: Filippo
full_name: Fratini, Filippo
last_name: Fratini
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Jorge
full_name: Machado, Jorge
last_name: Machado
- first_name: Mauro
full_name: Guerra, Mauro
last_name: Guerra
- first_name: Paul
full_name: Indelicato, Paul
last_name: Indelicato
- first_name: José
full_name: Santos, José
last_name: Santos
citation:
ama: Amaro P, Fratini F, Safari L, et al. Relativistic evaluation of the two-photon
decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential
model. Physical Review A - Atomic, Molecular, and Optical Physics. 2016;93(3).
doi:10.1103/PhysRevA.93.032502
apa: Amaro, P., Fratini, F., Safari, L., Machado, J., Guerra, M., Indelicato, P.,
& Santos, J. (2016). Relativistic evaluation of the two-photon decay of the
metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential
model. Physical Review A - Atomic, Molecular, and Optical Physics. American
Physical Society. https://doi.org/10.1103/PhysRevA.93.032502
chicago: Amaro, Pedro, Filippo Fratini, Laleh Safari, Jorge Machado, Mauro Guerra,
Paul Indelicato, and José Santos. “Relativistic Evaluation of the Two-Photon Decay
of the Metastable 1s22s2p3P0 State in Berylliumlike Ions with an Effective-Potential
Model.” Physical Review A - Atomic, Molecular, and Optical Physics. American
Physical Society, 2016. https://doi.org/10.1103/PhysRevA.93.032502.
ieee: P. Amaro et al., “Relativistic evaluation of the two-photon decay of
the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential
model,” Physical Review A - Atomic, Molecular, and Optical Physics, vol.
93, no. 3. American Physical Society, 2016.
ista: Amaro P, Fratini F, Safari L, Machado J, Guerra M, Indelicato P, Santos J.
2016. Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0
state in berylliumlike ions with an effective-potential model. Physical Review
A - Atomic, Molecular, and Optical Physics. 93(3), 032502.
mla: Amaro, Pedro, et al. “Relativistic Evaluation of the Two-Photon Decay of the
Metastable 1s22s2p3P0 State in Berylliumlike Ions with an Effective-Potential
Model.” Physical Review A - Atomic, Molecular, and Optical Physics, vol.
93, no. 3, 032502, American Physical Society, 2016, doi:10.1103/PhysRevA.93.032502.
short: P. Amaro, F. Fratini, L. Safari, J. Machado, M. Guerra, P. Indelicato, J.
Santos, Physical Review A - Atomic, Molecular, and Optical Physics 93 (2016).
date_created: 2018-12-11T11:52:21Z
date_published: 2016-03-07T00:00:00Z
date_updated: 2021-01-12T06:51:09Z
day: '07'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.93.032502
ec_funded: 1
intvolume: ' 93'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1508.06169
month: '03'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Physical Review A - Atomic, Molecular, and Optical Physics
publication_status: published
publisher: American Physical Society
publist_id: '5683'
quality_controlled: '1'
scopus_import: 1
status: public
title: Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0
state in berylliumlike ions with an effective-potential model
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 93
year: '2016'
...
---
_id: '1343'
abstract:
- lang: eng
text: "The Fermi-Hubbard model is one of the key models of condensed matter physics,
which holds a\r\n\r\npotential for explaining the mystery of high-temperature
superconductivity. Recent progress in\r\n\r\nultracold atoms in optical lattices
has paved the way to studying the model’s phase diagram using\r\n\r\nthe tools
of quantum simulation, which emerged as a promising alternative to the numerical\r\n\r\ncalculations
plagued by the infamous sign problem. However, the temperatures achieved using\r\n\r\nelaborate
laser cooling protocols so far have been too high to show the appearance of\r\n\r\nantiferromagnetic (AF)
and superconducting quantum phases directly. In this work, we demonstrate\r\n\r\nthat
using the machinery of dissipative quantum state engineering, one can observe
the emergence of\r\n\r\nthe AF order in the Fermi-Hubbard model with fermions
in optical lattices. The core of the approach\r\n\r\nis to add incoherent laser
scattering in such a way that the AF state emerges as the dark state of\r\n\r\nthe
driven-dissipative dynamics. The proposed controlled dissipation channels described
in this work\r\n\r\nare straightforward to add to already existing experimental
setups."
acknowledgement: "We acknowledge stimulating discussions with Ken Brown, Tommaso Calarco,
Andrew Daley, Suzanne\r\nMcEndoo, Tobias Osborne, Cindy Regal, Luis Santos, Micha\r\nł\r\nTomza,
and Martin Zwierlein. The work was supported by the People Programme (Marie Curie
Actions) of the European Union's Seventh Framework Programme (FP7/2007-2013) under
REA grant agreement no. [291734], by the Volkswagen Foundation, and by DFG within
SFB 1227 (DQ-mat)."
article_number: '093042'
author:
- first_name: Jan
full_name: Kaczmarczyk, Jan
id: 46C405DE-F248-11E8-B48F-1D18A9856A87
last_name: Kaczmarczyk
orcid: 0000-0002-1629-3675
- first_name: Hendrik
full_name: Weimer, Hendrik
last_name: Weimer
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Kaczmarczyk J, Weimer H, Lemeshko M. Dissipative preparation of antiferromagnetic
order in the Fermi-Hubbard model. New Journal of Physics. 2016;18(9). doi:10.1088/1367-2630/18/9/093042
apa: Kaczmarczyk, J., Weimer, H., & Lemeshko, M. (2016). Dissipative preparation
of antiferromagnetic order in the Fermi-Hubbard model. New Journal of Physics.
IOP Publishing Ltd. https://doi.org/10.1088/1367-2630/18/9/093042
chicago: Kaczmarczyk, Jan, Hendrik Weimer, and Mikhail Lemeshko. “Dissipative Preparation
of Antiferromagnetic Order in the Fermi-Hubbard Model.” New Journal of Physics.
IOP Publishing Ltd., 2016. https://doi.org/10.1088/1367-2630/18/9/093042.
ieee: J. Kaczmarczyk, H. Weimer, and M. Lemeshko, “Dissipative preparation of antiferromagnetic
order in the Fermi-Hubbard model,” New Journal of Physics, vol. 18, no.
9. IOP Publishing Ltd., 2016.
ista: Kaczmarczyk J, Weimer H, Lemeshko M. 2016. Dissipative preparation of antiferromagnetic
order in the Fermi-Hubbard model. New Journal of Physics. 18(9), 093042.
mla: Kaczmarczyk, Jan, et al. “Dissipative Preparation of Antiferromagnetic Order
in the Fermi-Hubbard Model.” New Journal of Physics, vol. 18, no. 9, 093042,
IOP Publishing Ltd., 2016, doi:10.1088/1367-2630/18/9/093042.
short: J. Kaczmarczyk, H. Weimer, M. Lemeshko, New Journal of Physics 18 (2016).
date_created: 2018-12-11T11:51:29Z
date_published: 2016-09-22T00:00:00Z
date_updated: 2021-01-12T06:50:01Z
day: '22'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1088/1367-2630/18/9/093042
ec_funded: 1
file:
- access_level: open_access
checksum: 2a43e235222755e31ffbd369882c61de
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:17:52Z
date_updated: 2020-07-14T12:44:45Z
file_id: '5309'
file_name: IST-2016-655-v1+1_njp_18_9_093042.pdf
file_size: 1076029
relation: main_file
file_date_updated: 2020-07-14T12:44:45Z
has_accepted_license: '1'
intvolume: ' 18'
issue: '9'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: New Journal of Physics
publication_status: published
publisher: IOP Publishing Ltd.
publist_id: '5909'
pubrep_id: '655'
quality_controlled: '1'
scopus_import: 1
status: public
title: Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 18
year: '2016'
...
---
_id: '1347'
abstract:
- lang: eng
text: 'During the past 70 years, the quantum theory of angular momentum has been
successfully applied to describing the properties of nuclei, atoms, and molecules,
and their interactions with each other as well as with external fields. Because
of the properties of quantum rotations, the angular-momentum algebra can be of
tremendous complexity even for a few interacting particles, such as valence electrons
of an atom, not to mention larger many-particle systems. In this work, we study
an example of the latter: A rotating quantum impurity coupled to a many-body bosonic
bath. In the regime of strong impurity-bath couplings, the problem involves the
addition of an infinite number of angular momenta, which renders it intractable
using currently available techniques. Here, we introduce a novel canonical transformation
that allows us to eliminate the complex angular-momentum algebra from such a class
of many-body problems. In addition, the transformation exposes the problem''s
constants of motion, and renders it solvable exactly in the limit of a slowly
rotating impurity. We exemplify the technique by showing that there exists a critical
rotational speed at which the impurity suddenly acquires one quantum of angular
momentum from the many-particle bath. Such an instability is accompanied by the
deformation of the phonon density in the frame rotating along with the impurity.'
acknowledgement: We are grateful to Eugene Demler, Jan Kaczmarczyk, Laleh Safari,
and Hendrik Weimer for insightful discussions. The work was supported by the NSF
through a grant for the Institute for Theoretical Atomic, Molecular, and Optical
Physics at Harvard University and Smithsonian Astrophysical Observatory.
article_number: '011012'
author:
- first_name: Richard
full_name: Schmidt, Richard
last_name: Schmidt
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Schmidt R, Lemeshko M. Deformation of a quantum many-particle system by a rotating
impurity. Physical Review X. 2016;6(1). doi:10.1103/PhysRevX.6.011012
apa: Schmidt, R., & Lemeshko, M. (2016). Deformation of a quantum many-particle
system by a rotating impurity. Physical Review X. American Physical Society.
https://doi.org/10.1103/PhysRevX.6.011012
chicago: Schmidt, Richard, and Mikhail Lemeshko. “Deformation of a Quantum Many-Particle
System by a Rotating Impurity.” Physical Review X. American Physical Society,
2016. https://doi.org/10.1103/PhysRevX.6.011012.
ieee: R. Schmidt and M. Lemeshko, “Deformation of a quantum many-particle system
by a rotating impurity,” Physical Review X, vol. 6, no. 1. American Physical
Society, 2016.
ista: Schmidt R, Lemeshko M. 2016. Deformation of a quantum many-particle system
by a rotating impurity. Physical Review X. 6(1), 011012.
mla: Schmidt, Richard, and Mikhail Lemeshko. “Deformation of a Quantum Many-Particle
System by a Rotating Impurity.” Physical Review X, vol. 6, no. 1, 011012,
American Physical Society, 2016, doi:10.1103/PhysRevX.6.011012.
short: R. Schmidt, M. Lemeshko, Physical Review X 6 (2016).
date_created: 2018-12-11T11:51:30Z
date_published: 2016-01-01T00:00:00Z
date_updated: 2021-01-12T06:50:03Z
day: '01'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/PhysRevX.6.011012
file:
- access_level: open_access
checksum: 6757a164d3c38905e05b2b5a188cb8ff
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:15:59Z
date_updated: 2020-07-14T12:44:45Z
file_id: '5183'
file_name: IST-2016-652-v1+1_PhysRevX.6.011012.pdf
file_size: 1165869
relation: main_file
file_date_updated: 2020-07-14T12:44:45Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
publication: Physical Review X
publication_status: published
publisher: American Physical Society
publist_id: '5902'
pubrep_id: '652'
quality_controlled: '1'
scopus_import: 1
status: public
title: Deformation of a quantum many-particle system by a rotating impurity
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2016'
...
---
_id: '1352'
abstract:
- lang: eng
text: We study the interplay of nematic and superconducting order in the two-dimensional
Hubbard model and show that they can coexist, especially when superconductivity
is not the energetically dominant phase. Due to a breaking of the C4 symmetry,
the coexisting phase inherently contains admixture of the s-wave pairing components.
As a result, the superconducting gap exhibits nonstandard features including changed
nodal directions. Our results also show that in the optimally doped regime the
pure superconducting phase is typically unstable towards developing nematicity
(breaking of the C4 symmetry). This has implications for the cuprate high-Tc superconductors,
for which in this regime the so-called intertwined orders have recently been observed.
Namely, the coexisting phase may be viewed as a precursor to such more involved
patterns of symmetry breaking.
acknowledgement: The authors are grateful to Florian Gebhard and Mikhail Lemeshko
for discussions and critical reading of the manuscript. The work was supported by
the Ministry of Science and Higher Education in Poland through the Iuventus Plus
Grant No. IP2012 017172, as well as by the People Programme (Marie Curie Actions)
of the European Union's Seventh Framework Programme (FP7/2007-2013) under REA Grant
Agreement No. 291734. J.K. acknowledges hospitality of the Leibniz Universität in
Hannover where a large part of the work was performed.
article_number: '085152'
author:
- first_name: Jan
full_name: Kaczmarczyk, Jan
id: 46C405DE-F248-11E8-B48F-1D18A9856A87
last_name: Kaczmarczyk
orcid: 0000-0002-1629-3675
- first_name: Tobias
full_name: Schickling, Tobias
last_name: Schickling
- first_name: Jörg
full_name: Bünemann, Jörg
last_name: Bünemann
citation:
ama: Kaczmarczyk J, Schickling T, Bünemann J. Coexistence of nematic order and superconductivity
in the Hubbard model. Physical Review B - Condensed Matter and Materials Physics.
2016;94(8). doi:10.1103/PhysRevB.94.085152
apa: Kaczmarczyk, J., Schickling, T., & Bünemann, J. (2016). Coexistence of
nematic order and superconductivity in the Hubbard model. Physical Review B
- Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.94.085152
chicago: Kaczmarczyk, Jan, Tobias Schickling, and Jörg Bünemann. “Coexistence of
Nematic Order and Superconductivity in the Hubbard Model.” Physical Review
B - Condensed Matter and Materials Physics. American Physical Society, 2016.
https://doi.org/10.1103/PhysRevB.94.085152.
ieee: J. Kaczmarczyk, T. Schickling, and J. Bünemann, “Coexistence of nematic order
and superconductivity in the Hubbard model,” Physical Review B - Condensed
Matter and Materials Physics, vol. 94, no. 8. American Physical Society, 2016.
ista: Kaczmarczyk J, Schickling T, Bünemann J. 2016. Coexistence of nematic order
and superconductivity in the Hubbard model. Physical Review B - Condensed Matter
and Materials Physics. 94(8), 085152.
mla: Kaczmarczyk, Jan, et al. “Coexistence of Nematic Order and Superconductivity
in the Hubbard Model.” Physical Review B - Condensed Matter and Materials Physics,
vol. 94, no. 8, 085152, American Physical Society, 2016, doi:10.1103/PhysRevB.94.085152.
short: J. Kaczmarczyk, T. Schickling, J. Bünemann, Physical Review B - Condensed
Matter and Materials Physics 94 (2016).
date_created: 2018-12-11T11:51:32Z
date_published: 2016-08-30T00:00:00Z
date_updated: 2021-01-12T06:50:05Z
day: '30'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.94.085152
ec_funded: 1
intvolume: ' 94'
issue: '8'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1512.06688
month: '08'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Physical Review B - Condensed Matter and Materials Physics
publication_status: published
publisher: American Physical Society
publist_id: '5897'
quality_controlled: '1'
scopus_import: 1
status: public
title: Coexistence of nematic order and superconductivity in the Hubbard model
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 94
year: '2016'
...
---
_id: '1368'
abstract:
- lang: eng
text: Superconductivity in heavy-fermion systems has an unconventional nature and
is considered to originate from the universal features of the electronic structure.
Here, the Anderson lattice model is studied by means of the full variational Gutzwiller
wave function incorporating nonlocal effects of the on-site interaction. We show
that the d-wave superconducting ground state can be driven solely by interelectronic
correlations. The proposed microscopic mechanism leads to a multigap superconductivity
with the dominant contribution due to f electrons and in the dx2−y2-wave channel.
Our results rationalize several important observations for CeCoIn5.
acknowledgement: "The work has been supported by the National Science Center
\ (NCN) under the Grant MAESTRO, No.\r\nDEC-2012/04/A/ST3/00342. "
article_number: '024517'
author:
- first_name: Marcin
full_name: Wysokiński, Marcin
last_name: Wysokiński
- first_name: Jan
full_name: Kaczmarczyk, Jan
id: 46C405DE-F248-11E8-B48F-1D18A9856A87
last_name: Kaczmarczyk
orcid: 0000-0002-1629-3675
- first_name: Jozef
full_name: Spałek, Jozef
last_name: Spałek
citation:
ama: 'Wysokiński M, Kaczmarczyk J, Spałek J. Correlation driven d wave superconductivity
in Anderson lattice model: Two gaps. Physical Review B - Condensed Matter and
Materials Physics. 2016;94(2). doi:10.1103/PhysRevB.94.024517'
apa: 'Wysokiński, M., Kaczmarczyk, J., & Spałek, J. (2016). Correlation driven
d wave superconductivity in Anderson lattice model: Two gaps. Physical Review
B - Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.94.024517'
chicago: 'Wysokiński, Marcin, Jan Kaczmarczyk, and Jozef Spałek. “Correlation Driven
d Wave Superconductivity in Anderson Lattice Model: Two Gaps.” Physical Review
B - Condensed Matter and Materials Physics. American Physical Society, 2016.
https://doi.org/10.1103/PhysRevB.94.024517.'
ieee: 'M. Wysokiński, J. Kaczmarczyk, and J. Spałek, “Correlation driven d wave
superconductivity in Anderson lattice model: Two gaps,” Physical Review B -
Condensed Matter and Materials Physics, vol. 94, no. 2. American Physical
Society, 2016.'
ista: 'Wysokiński M, Kaczmarczyk J, Spałek J. 2016. Correlation driven d wave superconductivity
in Anderson lattice model: Two gaps. Physical Review B - Condensed Matter and
Materials Physics. 94(2), 024517.'
mla: 'Wysokiński, Marcin, et al. “Correlation Driven d Wave Superconductivity in
Anderson Lattice Model: Two Gaps.” Physical Review B - Condensed Matter and
Materials Physics, vol. 94, no. 2, 024517, American Physical Society, 2016,
doi:10.1103/PhysRevB.94.024517.'
short: M. Wysokiński, J. Kaczmarczyk, J. Spałek, Physical Review B - Condensed Matter
and Materials Physics 94 (2016).
date_created: 2018-12-11T11:51:37Z
date_published: 2016-07-01T00:00:00Z
date_updated: 2021-01-12T06:50:12Z
day: '01'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.94.024517
ec_funded: 1
intvolume: ' 94'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1510.00224
month: '07'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Physical Review B - Condensed Matter and Materials Physics
publication_status: published
publisher: American Physical Society
publist_id: '5844'
quality_controlled: '1'
scopus_import: 1
status: public
title: 'Correlation driven d wave superconductivity in Anderson lattice model: Two
gaps'
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 94
year: '2016'
...
---
_id: '1416'
abstract:
- lang: eng
text: Anisotropic dipole-dipole interactions between ultracold dipolar fermions
break the symmetry of the Fermi surface and thereby deform it. Here we demonstrate
that such a Fermi surface deformation induces a topological phase transition -
the so-called Lifshitz transition - in the regime accessible to present-day experiments.
We describe the impact of the Lifshitz transition on observable quantities such
as the Fermi surface topology, the density-density correlation function, and the
excitation spectrum of the system. The Lifshitz transition in ultracold atoms
can be controlled by tuning the dipole orientation and, in contrast to the transition
studied in crystalline solids, is completely interaction driven.
article_number: '195145'
author:
- first_name: Erik
full_name: Van Loon, Erik
last_name: Van Loon
- first_name: Mikhail
full_name: Katsnelson, Mikhail
last_name: Katsnelson
- first_name: Lauriane
full_name: Chomaz, Lauriane
last_name: Chomaz
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Van Loon E, Katsnelson M, Chomaz L, Lemeshko M. Interaction-driven Lifshitz
transition with dipolar fermions in optical lattices. Physical Review B - Condensed
Matter and Materials Physics. 2016;93(19). doi:10.1103/PhysRevB.93.195145
apa: Van Loon, E., Katsnelson, M., Chomaz, L., & Lemeshko, M. (2016). Interaction-driven
Lifshitz transition with dipolar fermions in optical lattices. Physical Review
B - Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.93.195145
chicago: Van Loon, Erik, Mikhail Katsnelson, Lauriane Chomaz, and Mikhail Lemeshko.
“Interaction-Driven Lifshitz Transition with Dipolar Fermions in Optical Lattices.”
Physical Review B - Condensed Matter and Materials Physics. American Physical
Society, 2016. https://doi.org/10.1103/PhysRevB.93.195145.
ieee: E. Van Loon, M. Katsnelson, L. Chomaz, and M. Lemeshko, “Interaction-driven
Lifshitz transition with dipolar fermions in optical lattices,” Physical Review
B - Condensed Matter and Materials Physics, vol. 93, no. 19. American Physical
Society, 2016.
ista: Van Loon E, Katsnelson M, Chomaz L, Lemeshko M. 2016. Interaction-driven Lifshitz
transition with dipolar fermions in optical lattices. Physical Review B - Condensed
Matter and Materials Physics. 93(19), 195145.
mla: Van Loon, Erik, et al. “Interaction-Driven Lifshitz Transition with Dipolar
Fermions in Optical Lattices.” Physical Review B - Condensed Matter and Materials
Physics, vol. 93, no. 19, 195145, American Physical Society, 2016, doi:10.1103/PhysRevB.93.195145.
short: E. Van Loon, M. Katsnelson, L. Chomaz, M. Lemeshko, Physical Review B - Condensed
Matter and Materials Physics 93 (2016).
date_created: 2018-12-11T11:51:54Z
date_published: 2016-05-15T00:00:00Z
date_updated: 2021-01-12T06:50:36Z
day: '15'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.93.195145
intvolume: ' 93'
issue: '19'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1603.09358
month: '05'
oa: 1
oa_version: Preprint
publication: Physical Review B - Condensed Matter and Materials Physics
publication_status: published
publisher: American Physical Society
publist_id: '5791'
quality_controlled: '1'
scopus_import: 1
status: public
title: Interaction-driven Lifshitz transition with dipolar fermions in optical lattices
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 93
year: '2016'
...
---
_id: '1419'
abstract:
- lang: eng
text: We study the superconducting phase of the Hubbard model using the Gutzwiller
variational wave function (GWF) and the recently proposed diagrammatic expansion
technique (DE-GWF). The DE-GWF method works on the level of the full GWF and in
the thermodynamic limit. Here, we consider a finite-size system to study the accuracy
of the results as a function of the system size (which is practically unrestricted).
We show that the finite-size scaling used, e.g. in the variational Monte Carlo
method can lead to significant, uncontrolled errors. The presented research is
the first step towards applying the DE-GWF method in studies of inhomogeneous
situations, including systems with impurities, defects, inhomogeneous phases,
or disorder.
article_number: '175701'
author:
- first_name: Andrzej
full_name: Tomski, Andrzej
last_name: Tomski
- first_name: Jan
full_name: Kaczmarczyk, Jan
id: 46C405DE-F248-11E8-B48F-1D18A9856A87
last_name: Kaczmarczyk
orcid: 0000-0002-1629-3675
citation:
ama: 'Tomski A, Kaczmarczyk J. Gutzwiller wave function for finite systems: Superconductivity
in the Hubbard model. Journal of Physics: Condensed Matter. 2016;28(17).
doi:10.1088/0953-8984/28/17/175701'
apa: 'Tomski, A., & Kaczmarczyk, J. (2016). Gutzwiller wave function for finite
systems: Superconductivity in the Hubbard model. Journal of Physics: Condensed
Matter. IOP Publishing Ltd. https://doi.org/10.1088/0953-8984/28/17/175701'
chicago: 'Tomski, Andrzej, and Jan Kaczmarczyk. “Gutzwiller Wave Function for Finite
Systems: Superconductivity in the Hubbard Model.” Journal of Physics: Condensed
Matter. IOP Publishing Ltd., 2016. https://doi.org/10.1088/0953-8984/28/17/175701.'
ieee: 'A. Tomski and J. Kaczmarczyk, “Gutzwiller wave function for finite systems:
Superconductivity in the Hubbard model,” Journal of Physics: Condensed Matter,
vol. 28, no. 17. IOP Publishing Ltd., 2016.'
ista: 'Tomski A, Kaczmarczyk J. 2016. Gutzwiller wave function for finite systems:
Superconductivity in the Hubbard model. Journal of Physics: Condensed Matter.
28(17), 175701.'
mla: 'Tomski, Andrzej, and Jan Kaczmarczyk. “Gutzwiller Wave Function for Finite
Systems: Superconductivity in the Hubbard Model.” Journal of Physics: Condensed
Matter, vol. 28, no. 17, 175701, IOP Publishing Ltd., 2016, doi:10.1088/0953-8984/28/17/175701.'
short: 'A. Tomski, J. Kaczmarczyk, Journal of Physics: Condensed Matter 28 (2016).'
date_created: 2018-12-11T11:51:55Z
date_published: 2016-03-29T00:00:00Z
date_updated: 2021-01-12T06:50:36Z
day: '29'
department:
- _id: MiLe
doi: 10.1088/0953-8984/28/17/175701
ec_funded: 1
intvolume: ' 28'
issue: '17'
language:
- iso: eng
month: '03'
oa_version: None
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: 'Journal of Physics: Condensed Matter'
publication_status: published
publisher: IOP Publishing Ltd.
publist_id: '5788'
quality_controlled: '1'
scopus_import: 1
status: public
title: 'Gutzwiller wave function for finite systems: Superconductivity in the Hubbard
model'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 28
year: '2016'
...
---
_id: '1204'
abstract:
- lang: eng
text: In science, as in life, "surprises" can be adequately appreciated
only in the presence of a null model, what we expect a priori. In physics, theories
sometimes express the values of dimensionless physical constants as combinations
of mathematical constants like π or e. The inverse problem also arises, whereby
the measured value of a physical constant admits a "surprisingly" simple
approximation in terms of well-known mathematical constants. Can we estimate the
probability for this to be a mere coincidence, rather than an inkling of some
theory? We answer the question in the most naive form.
author:
- first_name: Ariel
full_name: Amir, Ariel
last_name: Amir
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Tadashi
full_name: Tokieda, Tadashi
last_name: Tokieda
citation:
ama: Amir A, Lemeshko M, Tokieda T. Surprises in numerical expressions of physical
constants. American Mathematical Monthly. 2016;123(6):609-612. doi:10.4169/amer.math.monthly.123.6.609
apa: Amir, A., Lemeshko, M., & Tokieda, T. (2016). Surprises in numerical expressions
of physical constants. American Mathematical Monthly. Mathematical Association
of America. https://doi.org/10.4169/amer.math.monthly.123.6.609
chicago: Amir, Ariel, Mikhail Lemeshko, and Tadashi Tokieda. “Surprises in Numerical
Expressions of Physical Constants.” American Mathematical Monthly. Mathematical
Association of America, 2016. https://doi.org/10.4169/amer.math.monthly.123.6.609.
ieee: A. Amir, M. Lemeshko, and T. Tokieda, “Surprises in numerical expressions
of physical constants,” American Mathematical Monthly, vol. 123, no. 6.
Mathematical Association of America, pp. 609–612, 2016.
ista: Amir A, Lemeshko M, Tokieda T. 2016. Surprises in numerical expressions of
physical constants. American Mathematical Monthly. 123(6), 609–612.
mla: Amir, Ariel, et al. “Surprises in Numerical Expressions of Physical Constants.”
American Mathematical Monthly, vol. 123, no. 6, Mathematical Association
of America, 2016, pp. 609–12, doi:10.4169/amer.math.monthly.123.6.609.
short: A. Amir, M. Lemeshko, T. Tokieda, American Mathematical Monthly 123 (2016)
609–612.
date_created: 2018-12-11T11:50:42Z
date_published: 2016-06-01T00:00:00Z
date_updated: 2021-01-12T06:49:04Z
day: '01'
department:
- _id: MiLe
doi: 10.4169/amer.math.monthly.123.6.609
intvolume: ' 123'
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1603.00299
month: '06'
oa: 1
oa_version: Preprint
page: 609 - 612
publication: American Mathematical Monthly
publication_status: published
publisher: Mathematical Association of America
publist_id: '6143'
quality_controlled: '1'
scopus_import: 1
status: public
title: Surprises in numerical expressions of physical constants
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 123
year: '2016'
...