---
_id: '6092'
abstract:
- lang: eng
text: In 1915, Einstein and de Haas and Barnett demonstrated that changing the magnetization
of a magnetic material results in mechanical rotation and vice versa. At the microscopic
level, this effect governs the transfer between electron spin and orbital angular
momentum, and lattice degrees of freedom, understanding which is key for molecular
magnets, nano-magneto-mechanics, spintronics, and ultrafast magnetism. Until now,
the timescales of electron-to-lattice angular momentum transfer remain unclear,
since modeling this process on a microscopic level requires the addition of an
infinite amount of quantum angular momenta. We show that this problem can be solved
by reformulating it in terms of the recently discovered angulon quasiparticles,
which results in a rotationally invariant quantum many-body theory. In particular,
we demonstrate that nonperturbative effects take place even if the electron-phonon
coupling is weak and give rise to angular momentum transfer on femtosecond timescales.
article_number: '064428'
article_processing_charge: No
arxiv: 1
author:
- first_name: Johann H
full_name: Mentink, Johann H
last_name: Mentink
- first_name: Mikhail
full_name: Katsnelson, Mikhail
last_name: Katsnelson
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Mentink JH, Katsnelson M, Lemeshko M. Quantum many-body dynamics of the Einstein-de
Haas effect. Physical Review B. 2019;99(6). doi:10.1103/PhysRevB.99.064428
apa: Mentink, J. H., Katsnelson, M., & Lemeshko, M. (2019). Quantum many-body
dynamics of the Einstein-de Haas effect. Physical Review B. American Physical
Society. https://doi.org/10.1103/PhysRevB.99.064428
chicago: Mentink, Johann H, Mikhail Katsnelson, and Mikhail Lemeshko. “Quantum Many-Body
Dynamics of the Einstein-de Haas Effect.” Physical Review B. American Physical
Society, 2019. https://doi.org/10.1103/PhysRevB.99.064428.
ieee: J. H. Mentink, M. Katsnelson, and M. Lemeshko, “Quantum many-body dynamics
of the Einstein-de Haas effect,” Physical Review B, vol. 99, no. 6. American
Physical Society, 2019.
ista: Mentink JH, Katsnelson M, Lemeshko M. 2019. Quantum many-body dynamics of
the Einstein-de Haas effect. Physical Review B. 99(6), 064428.
mla: Mentink, Johann H., et al. “Quantum Many-Body Dynamics of the Einstein-de Haas
Effect.” Physical Review B, vol. 99, no. 6, 064428, American Physical Society,
2019, doi:10.1103/PhysRevB.99.064428.
short: J.H. Mentink, M. Katsnelson, M. Lemeshko, Physical Review B 99 (2019).
date_created: 2019-03-10T22:59:20Z
date_published: 2019-02-01T00:00:00Z
date_updated: 2024-02-28T13:11:54Z
day: '01'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.99.064428
external_id:
arxiv:
- '1802.01638'
isi:
- '000459223400004'
intvolume: ' 99'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1802.01638
month: '02'
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 B
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantum many-body dynamics of the Einstein-de Haas effect
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 99
year: '2019'
...
---
_id: '6632'
abstract:
- lang: eng
text: We consider a two-component Bose gas in two dimensions at a low temperature
with short-range repulsive interaction. In the coexistence phase where both components
are superfluid, interspecies interactions induce a nondissipative drag between
the two superfluid flows (Andreev-Bashkin effect). We show that this behavior
leads to a modification of the usual Berezinskii-Kosterlitz-Thouless (BKT) transition
in two dimensions. We extend the renormalization of the superfluid densities at
finite temperature using the renormalization-group approach and find that the
vortices of one component have a large influence on the superfluid properties
of the other, mediated by the nondissipative drag. The extended BKT flow equations indicate that the occurrence of the
vortex unbinding transition in one of the components can induce the breakdown
of superfluidity also in the other, leading to a locking phenomenon for the critical
temperatures of the two gases.
article_number: '063627'
article_processing_charge: No
arxiv: 1
author:
- first_name: Volker
full_name: Karle, Volker
last_name: Karle
- first_name: Nicolò
full_name: Defenu, Nicolò
last_name: Defenu
- first_name: Tilman
full_name: Enss, Tilman
last_name: Enss
citation:
ama: Karle V, Defenu N, Enss T. Coupled superfluidity of binary Bose mixtures in
two dimensions. Physical Review A. 2019;99(6). doi:10.1103/PhysRevA.99.063627
apa: Karle, V., Defenu, N., & Enss, T. (2019). Coupled superfluidity of binary
Bose mixtures in two dimensions. Physical Review A. American Physical Society.
https://doi.org/10.1103/PhysRevA.99.063627
chicago: Karle, Volker, Nicolò Defenu, and Tilman Enss. “Coupled Superfluidity of
Binary Bose Mixtures in Two Dimensions.” Physical Review A. American Physical
Society, 2019. https://doi.org/10.1103/PhysRevA.99.063627.
ieee: V. Karle, N. Defenu, and T. Enss, “Coupled superfluidity of binary Bose mixtures
in two dimensions,” Physical Review A, vol. 99, no. 6. American Physical
Society, 2019.
ista: Karle V, Defenu N, Enss T. 2019. Coupled superfluidity of binary Bose mixtures
in two dimensions. Physical Review A. 99(6), 063627.
mla: Karle, Volker, et al. “Coupled Superfluidity of Binary Bose Mixtures in Two
Dimensions.” Physical Review A, vol. 99, no. 6, 063627, American Physical
Society, 2019, doi:10.1103/PhysRevA.99.063627.
short: V. Karle, N. Defenu, T. Enss, Physical Review A 99 (2019).
date_created: 2019-07-14T21:59:17Z
date_published: 2019-06-28T00:00:00Z
date_updated: 2024-02-28T13:12:34Z
day: '28'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.99.063627
external_id:
arxiv:
- '1903.06759'
isi:
- '000473133600007'
intvolume: ' 99'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1903.06759
month: '06'
oa: 1
oa_version: Preprint
publication: Physical Review A
publication_identifier:
eissn:
- '24699934'
issn:
- '24699926'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Coupled superfluidity of binary Bose mixtures in two dimensions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 99
year: '2019'
...
---
_id: '6646'
abstract:
- lang: eng
text: We demonstrate robust retention of valley coherence and its control via polariton
pseudospin precession through the optical TE-TM splitting in bilayer WS2 microcavity
exciton polaritons at room temperature.
article_number: paper JTu2A.52
article_processing_charge: No
author:
- first_name: Mandeep
full_name: Khatoniar, Mandeep
last_name: Khatoniar
- first_name: Nicholas
full_name: Yama, Nicholas
last_name: Yama
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Sriram
full_name: Guddala, Sriram
last_name: Guddala
- first_name: Pouyan
full_name: Ghaemi, Pouyan
last_name: Ghaemi
- first_name: Vinod
full_name: Menon, Vinod
last_name: Menon
citation:
ama: 'Khatoniar M, Yama N, Ghazaryan A, Guddala S, Ghaemi P, Menon V. Room temperature
control of valley coherence in bilayer WS2 exciton polaritons. In: CLEO: Applications
and Technology. Optica Publishing Group; 2019. doi:10.1364/cleo_at.2019.jtu2a.52'
apa: 'Khatoniar, M., Yama, N., Ghazaryan, A., Guddala, S., Ghaemi, P., & Menon,
V. (2019). Room temperature control of valley coherence in bilayer WS2 exciton
polaritons. In CLEO: Applications and Technology. San Jose, CA, United
States: Optica Publishing Group. https://doi.org/10.1364/cleo_at.2019.jtu2a.52'
chicago: 'Khatoniar, Mandeep, Nicholas Yama, Areg Ghazaryan, Sriram Guddala, Pouyan
Ghaemi, and Vinod Menon. “Room Temperature Control of Valley Coherence in Bilayer
WS2 Exciton Polaritons.” In CLEO: Applications and Technology. Optica
Publishing Group, 2019. https://doi.org/10.1364/cleo_at.2019.jtu2a.52.'
ieee: 'M. Khatoniar, N. Yama, A. Ghazaryan, S. Guddala, P. Ghaemi, and V. Menon,
“Room temperature control of valley coherence in bilayer WS2 exciton polaritons,”
in CLEO: Applications and Technology, San Jose, CA, United States, 2019.'
ista: 'Khatoniar M, Yama N, Ghazaryan A, Guddala S, Ghaemi P, Menon V. 2019. Room
temperature control of valley coherence in bilayer WS2 exciton polaritons. CLEO:
Applications and Technology. CLEO: Conference on Lasers and Electro-Optics, paper
JTu2A.52.'
mla: 'Khatoniar, Mandeep, et al. “Room Temperature Control of Valley Coherence in
Bilayer WS2 Exciton Polaritons.” CLEO: Applications and Technology, paper
JTu2A.52, Optica Publishing Group, 2019, doi:10.1364/cleo_at.2019.jtu2a.52.'
short: 'M. Khatoniar, N. Yama, A. Ghazaryan, S. Guddala, P. Ghaemi, V. Menon, in:,
CLEO: Applications and Technology, Optica Publishing Group, 2019.'
conference:
end_date: 2019-05-10
location: San Jose, CA, United States
name: 'CLEO: Conference on Lasers and Electro-Optics'
start_date: 2019-05-05
date_created: 2019-07-17T09:40:44Z
date_published: 2019-05-01T00:00:00Z
date_updated: 2023-10-17T12:14:29Z
day: '01'
department:
- _id: MiLe
doi: 10.1364/cleo_at.2019.jtu2a.52
language:
- iso: eng
month: '05'
oa_version: None
publication: 'CLEO: Applications and Technology'
publication_identifier:
isbn:
- '9781943580576'
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
scopus_import: '1'
status: public
title: Room temperature control of valley coherence in bilayer WS2 exciton polaritons
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2019'
...
---
_id: '6786'
abstract:
- lang: eng
text: Dipolar coupling plays a fundamental role in the interaction between electrically
or magnetically polarized species such as magnetic atoms and dipolar molecules
in a gas or dipolar excitons in the solid state. Unlike Coulomb or contactlike
interactions found in many atomic, molecular, and condensed-matter systems, this
interaction is long-ranged and highly anisotropic, as it changes from repulsive
to attractive depending on the relative positions and orientation of the dipoles.
Because of this unique property, many exotic, symmetry-breaking collective states
have been recently predicted for cold dipolar gases, but only a few have been
experimentally detected and only in dilute atomic dipolar Bose-Einstein condensates.
Here, we report on the first observation of attractive dipolar coupling between
excitonic dipoles using a new design of stacked semiconductor bilayers. We show
that the presence of a dipolar exciton fluid in one bilayer modifies the spatial
distribution and increases the binding energy of excitonic dipoles in a vertically
remote layer. The binding energy changes are explained using a many-body polaron
model describing the deformation of the exciton cloud due to its interaction with
a remote dipolar exciton. The surprising nonmonotonic dependence on the cloud
density indicates the important role of dipolar correlations, which is unique
to dense, strongly interacting dipolar solid-state systems. Our concept provides
a route for the realization of dipolar lattices with strong anisotropic interactions
in semiconductor systems, which open the way for the observation of theoretically
predicted new and exotic collective phases, as well as for engineering and sensing
their collective excitations.
article_number: '021026'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Colin
full_name: Hubert, Colin
last_name: Hubert
- first_name: Yifat
full_name: Baruchi, Yifat
last_name: Baruchi
- first_name: Yotam
full_name: Mazuz-Harpaz, Yotam
last_name: Mazuz-Harpaz
- first_name: Kobi
full_name: Cohen, Kobi
last_name: Cohen
- first_name: Klaus
full_name: Biermann, Klaus
last_name: Biermann
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Ken
full_name: West, Ken
last_name: West
- first_name: Loren
full_name: Pfeiffer, Loren
last_name: Pfeiffer
- first_name: Ronen
full_name: Rapaport, Ronen
last_name: Rapaport
- first_name: Paulo
full_name: Santos, Paulo
last_name: Santos
citation:
ama: Hubert C, Baruchi Y, Mazuz-Harpaz Y, et al. Attractive dipolar coupling between
stacked exciton fluids. Physical Review X. 2019;9(2). doi:10.1103/PhysRevX.9.021026
apa: Hubert, C., Baruchi, Y., Mazuz-Harpaz, Y., Cohen, K., Biermann, K., Lemeshko,
M., … Santos, P. (2019). Attractive dipolar coupling between stacked exciton fluids.
Physical Review X. American Physical Society. https://doi.org/10.1103/PhysRevX.9.021026
chicago: Hubert, Colin, Yifat Baruchi, Yotam Mazuz-Harpaz, Kobi Cohen, Klaus Biermann,
Mikhail Lemeshko, Ken West, Loren Pfeiffer, Ronen Rapaport, and Paulo Santos.
“Attractive Dipolar Coupling between Stacked Exciton Fluids.” Physical Review
X. American Physical Society, 2019. https://doi.org/10.1103/PhysRevX.9.021026.
ieee: C. Hubert et al., “Attractive dipolar coupling between stacked exciton
fluids,” Physical Review X, vol. 9, no. 2. American Physical Society, 2019.
ista: Hubert C, Baruchi Y, Mazuz-Harpaz Y, Cohen K, Biermann K, Lemeshko M, West
K, Pfeiffer L, Rapaport R, Santos P. 2019. Attractive dipolar coupling between
stacked exciton fluids. Physical Review X. 9(2), 021026.
mla: Hubert, Colin, et al. “Attractive Dipolar Coupling between Stacked Exciton
Fluids.” Physical Review X, vol. 9, no. 2, 021026, American Physical Society,
2019, doi:10.1103/PhysRevX.9.021026.
short: C. Hubert, Y. Baruchi, Y. Mazuz-Harpaz, K. Cohen, K. Biermann, M. Lemeshko,
K. West, L. Pfeiffer, R. Rapaport, P. Santos, Physical Review X 9 (2019).
date_created: 2019-08-11T21:59:20Z
date_published: 2019-05-08T00:00:00Z
date_updated: 2024-02-28T13:12:48Z
day: '08'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/PhysRevX.9.021026
external_id:
arxiv:
- '1807.11238'
isi:
- '000467402900001'
file:
- access_level: open_access
checksum: 065ff82ee4a1d2c3773ce4b76ff4213c
content_type: application/pdf
creator: dernst
date_created: 2019-08-12T12:14:18Z
date_updated: 2020-07-14T12:47:40Z
file_id: '6802'
file_name: 2019_PhysReviewX_Hubert.pdf
file_size: 1193550
relation: main_file
file_date_updated: 2020-07-14T12:47:40Z
has_accepted_license: '1'
intvolume: ' 9'
isi: 1
issue: '2'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published 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 X
publication_identifier:
eissn:
- 2160-3308
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Attractive dipolar coupling between stacked exciton fluids
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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2019'
...
---
_id: '195'
abstract:
- lang: eng
text: We demonstrate that identical impurities immersed in a two-dimensional many-particle
bath can be viewed as flux-tube-charged-particle composites described by fractional
statistics. In particular, we find that the bath manifests itself as an external
magnetic flux tube with respect to the impurities, and hence the time-reversal
symmetry is broken for the effective Hamiltonian describing the impurities. The
emerging flux tube acts as a statistical gauge field after a certain critical
coupling. This critical coupling corresponds to the intersection point between
the quasiparticle state and the phonon wing, where the angular momentum is transferred
from the impurity to the bath. This amounts to a novel configuration with emerging
anyons. The proposed setup paves the way to realizing anyons using electrons interacting
with superfluid helium or lattice phonons, as well as using atomic impurities
in ultracold gases.
article_number: '045402'
article_processing_charge: No
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: 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. Anyonic statistics of quantum impurities in two dimensions.
Physical Review B - Condensed Matter and Materials Physics. 2018;98(4).
doi:10.1103/PhysRevB.98.045402
apa: Yakaboylu, E., & Lemeshko, M. (2018). Anyonic statistics of quantum impurities
in two dimensions. Physical Review B - Condensed Matter and Materials Physics.
American Physical Society. https://doi.org/10.1103/PhysRevB.98.045402
chicago: Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anyonic Statistics of Quantum
Impurities in Two Dimensions.” Physical Review B - Condensed Matter and Materials
Physics. American Physical Society, 2018. https://doi.org/10.1103/PhysRevB.98.045402.
ieee: E. Yakaboylu and M. Lemeshko, “Anyonic statistics of quantum impurities in
two dimensions,” Physical Review B - Condensed Matter and Materials Physics,
vol. 98, no. 4. American Physical Society, 2018.
ista: Yakaboylu E, Lemeshko M. 2018. Anyonic statistics of quantum impurities in
two dimensions. Physical Review B - Condensed Matter and Materials Physics. 98(4),
045402.
mla: Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anyonic Statistics of Quantum Impurities
in Two Dimensions.” Physical Review B - Condensed Matter and Materials Physics,
vol. 98, no. 4, 045402, American Physical Society, 2018, doi:10.1103/PhysRevB.98.045402.
short: E. Yakaboylu, M. Lemeshko, Physical Review B - Condensed Matter and Materials
Physics 98 (2018).
date_created: 2018-12-11T11:45:08Z
date_published: 2018-07-15T00:00:00Z
date_updated: 2023-09-08T13:22:57Z
day: '15'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.98.045402
ec_funded: 1
external_id:
arxiv:
- '1712.00308'
isi:
- '000436939100007'
intvolume: ' 98'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1712.00308
month: '07'
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 B - Condensed Matter and Materials Physics
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Anyonic statistics of quantum impurities in two dimensions
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 98
year: '2018'
...
---
_id: '5794'
abstract:
- lang: eng
text: We present an approach to interacting quantum many-body systems based on the
notion of quantum groups, also known as q-deformed Lie algebras. In particular,
we show that, if the symmetry of a free quantum particle corresponds to a Lie
group G, in the presence of a many-body environment this particle can be described
by a deformed group, Gq. Crucially, the single deformation parameter, q, contains
all the information about the many-particle interactions in the system. We exemplify
our approach by considering a quantum rotor interacting with a bath of bosons,
and demonstrate that extracting the value of q from closed-form solutions in the
perturbative regime allows one to predict the behavior of the system for arbitrary
values of the impurity-bath coupling strength, in good agreement with nonperturbative
calculations. Furthermore, the value of the deformation parameter allows one to
predict at which coupling strengths rotor-bath interactions result in a formation
of a stable quasiparticle. The approach based on quantum groups does not only
allow for a drastic simplification of impurity problems, but also provides valuable
insights into hidden symmetries of interacting many-particle systems.
article_number: '255302'
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: Mikhail
full_name: Shkolnikov, Mikhail
id: 35084A62-F248-11E8-B48F-1D18A9856A87
last_name: Shkolnikov
orcid: 0000-0002-4310-178X
- 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, Shkolnikov M, Lemeshko M. Quantum groups as hidden symmetries
of quantum impurities. Physical Review Letters. 2018;121(25). doi:10.1103/PhysRevLett.121.255302
apa: Yakaboylu, E., Shkolnikov, M., & Lemeshko, M. (2018). Quantum groups as
hidden symmetries of quantum impurities. Physical Review Letters. American
Physical Society. https://doi.org/10.1103/PhysRevLett.121.255302
chicago: Yakaboylu, Enderalp, Mikhail Shkolnikov, and Mikhail Lemeshko. “Quantum
Groups as Hidden Symmetries of Quantum Impurities.” Physical Review Letters.
American Physical Society, 2018. https://doi.org/10.1103/PhysRevLett.121.255302.
ieee: E. Yakaboylu, M. Shkolnikov, and M. Lemeshko, “Quantum groups as hidden symmetries
of quantum impurities,” Physical Review Letters, vol. 121, no. 25. American
Physical Society, 2018.
ista: Yakaboylu E, Shkolnikov M, Lemeshko M. 2018. Quantum groups as hidden symmetries
of quantum impurities. Physical Review Letters. 121(25), 255302.
mla: Yakaboylu, Enderalp, et al. “Quantum Groups as Hidden Symmetries of Quantum
Impurities.” Physical Review Letters, vol. 121, no. 25, 255302, American
Physical Society, 2018, doi:10.1103/PhysRevLett.121.255302.
short: E. Yakaboylu, M. Shkolnikov, M. Lemeshko, Physical Review Letters 121 (2018).
date_created: 2019-01-06T22:59:12Z
date_published: 2018-12-17T00:00:00Z
date_updated: 2023-09-15T12:09:06Z
day: '17'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.121.255302
ec_funded: 1
external_id:
arxiv:
- '1809.00222'
isi:
- '000454178600009'
intvolume: ' 121'
isi: 1
issue: '25'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1809.00222
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: 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
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantum groups as hidden symmetries of quantum impurities
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 121
year: '2018'
...
---
_id: '5983'
abstract:
- lang: eng
text: We study a quantum impurity possessing both translational and internal rotational
degrees of freedom interacting with a bosonic bath. Such a system corresponds
to a “rotating polaron,” which can be used to model, e.g., a rotating molecule
immersed in an ultracold Bose gas or superfluid helium. We derive the Hamiltonian
of the rotating polaron and study its spectrum in the weak- and strong-coupling
regimes using a combination of variational, diagrammatic, and mean-field approaches.
We reveal how the coupling between linear and angular momenta affects stable quasiparticle
states, and demonstrate that internal rotation leads to an enhanced self-localization
in the translational degrees of freedom.
article_number: '224506'
article_processing_charge: No
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: Bikashkali
full_name: Midya, Bikashkali
id: 456187FC-F248-11E8-B48F-1D18A9856A87
last_name: Midya
- first_name: Andreas
full_name: Deuchert, Andreas
id: 4DA65CD0-F248-11E8-B48F-1D18A9856A87
last_name: Deuchert
orcid: 0000-0003-3146-6746
- first_name: Nikolai K
full_name: Leopold, Nikolai K
id: 4BC40BEC-F248-11E8-B48F-1D18A9856A87
last_name: Leopold
orcid: 0000-0002-0495-6822
- 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, Midya B, Deuchert A, Leopold NK, Lemeshko M. Theory of the rotating
polaron: Spectrum and self-localization. Physical Review B. 2018;98(22).
doi:10.1103/physrevb.98.224506'
apa: 'Yakaboylu, E., Midya, B., Deuchert, A., Leopold, N. K., & Lemeshko, M.
(2018). Theory of the rotating polaron: Spectrum and self-localization. Physical
Review B. American Physical Society. https://doi.org/10.1103/physrevb.98.224506'
chicago: 'Yakaboylu, Enderalp, Bikashkali Midya, Andreas Deuchert, Nikolai K Leopold,
and Mikhail Lemeshko. “Theory of the Rotating Polaron: Spectrum and Self-Localization.”
Physical Review B. American Physical Society, 2018. https://doi.org/10.1103/physrevb.98.224506.'
ieee: 'E. Yakaboylu, B. Midya, A. Deuchert, N. K. Leopold, and M. Lemeshko, “Theory
of the rotating polaron: Spectrum and self-localization,” Physical Review B,
vol. 98, no. 22. American Physical Society, 2018.'
ista: 'Yakaboylu E, Midya B, Deuchert A, Leopold NK, Lemeshko M. 2018. Theory of
the rotating polaron: Spectrum and self-localization. Physical Review B. 98(22),
224506.'
mla: 'Yakaboylu, Enderalp, et al. “Theory of the Rotating Polaron: Spectrum and
Self-Localization.” Physical Review B, vol. 98, no. 22, 224506, American
Physical Society, 2018, doi:10.1103/physrevb.98.224506.'
short: E. Yakaboylu, B. Midya, A. Deuchert, N.K. Leopold, M. Lemeshko, Physical
Review B 98 (2018).
date_created: 2019-02-14T10:37:09Z
date_published: 2018-12-12T00:00:00Z
date_updated: 2023-09-19T14:29:03Z
day: '12'
department:
- _id: MiLe
- _id: RoSe
doi: 10.1103/physrevb.98.224506
ec_funded: 1
external_id:
arxiv:
- '1809.01204'
isi:
- '000452992700008'
intvolume: ' 98'
isi: 1
issue: '22'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1809.01204
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
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Theory of the rotating polaron: Spectrum and self-localization'
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 98
year: '2018'
...
---
_id: '6339'
abstract:
- lang: eng
text: We introduce a diagrammatic Monte Carlo approach to angular momentum properties
of quantum many-particle systems possessing a macroscopic number of degrees of
freedom. The treatment is based on a diagrammatic expansion that merges the usual
Feynman diagrams with the angular momentum diagrams known from atomic and nuclear
structure theory, thereby incorporating the non-Abelian algebra inherent to quantum
rotations. Our approach is applicable at arbitrary coupling, is free of systematic
errors and of finite-size effects, and naturally provides access to the impurity
Green function. We exemplify the technique by obtaining an all-coupling solution
of the angulon model; however, the method is quite general and can be applied
to a broad variety of systems in which particles exchange quantum angular momentum
with their many-body environment.
article_number: '165301'
article_processing_charge: No
arxiv: 1
author:
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Timur
full_name: Tscherbul, Timur
last_name: Tscherbul
- 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, Tscherbul T, Lemeshko M. Diagrammatic Monte Carlo approach to angular
momentum in quantum many-particle systems. Physical Review Letters. 2018;121(16).
doi:10.1103/physrevlett.121.165301
apa: Bighin, G., Tscherbul, T., & Lemeshko, M. (2018). Diagrammatic Monte Carlo
approach to angular momentum in quantum many-particle systems. Physical Review
Letters. American Physical Society. https://doi.org/10.1103/physrevlett.121.165301
chicago: Bighin, Giacomo, Timur Tscherbul, and Mikhail Lemeshko. “Diagrammatic Monte Carlo
Approach to Angular Momentum in Quantum Many-Particle Systems.” Physical Review
Letters. American Physical Society, 2018. https://doi.org/10.1103/physrevlett.121.165301.
ieee: G. Bighin, T. Tscherbul, and M. Lemeshko, “Diagrammatic Monte Carlo approach
to angular momentum in quantum many-particle systems,” Physical Review Letters,
vol. 121, no. 16. American Physical Society, 2018.
ista: Bighin G, Tscherbul T, Lemeshko M. 2018. Diagrammatic Monte Carlo approach
to angular momentum in quantum many-particle systems. Physical Review Letters.
121(16), 165301.
mla: Bighin, Giacomo, et al. “Diagrammatic Monte Carlo Approach to Angular Momentum
in Quantum Many-Particle Systems.” Physical Review Letters, vol. 121, no.
16, 165301, American Physical Society, 2018, doi:10.1103/physrevlett.121.165301.
short: G. Bighin, T. Tscherbul, M. Lemeshko, Physical Review Letters 121 (2018).
date_created: 2019-04-17T10:53:38Z
date_published: 2018-10-16T00:00:00Z
date_updated: 2024-02-28T13:15:09Z
day: '16'
department:
- _id: MiLe
doi: 10.1103/physrevlett.121.165301
external_id:
arxiv:
- '1803.07990'
isi:
- '000447468400008'
intvolume: ' 121'
isi: 1
issue: '16'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1803.07990
month: '10'
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
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/description-of-rotating-molecules-made-easy/
scopus_import: '1'
status: public
title: Diagrammatic Monte Carlo approach to angular momentum in quantum many-particle
systems
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 121
year: '2018'
...
---
_id: '294'
abstract:
- lang: eng
text: We developed a method to calculate two-photon processes in quantum mechanics
that replaces the infinite summation over the intermediate states by a perturbation
expansion. This latter consists of a series of commutators that involve position,
momentum, and Hamiltonian quantum operators. We analyzed several single- and many-particle
cases for which a closed-form solution to the perturbation expansion exists, as
well as more complicated cases for which a solution is found by convergence. Throughout
the article, Rayleigh and Raman scattering are taken as examples of two-photon
processes. The present method provides a clear distinction between the Thomson
scattering, regarded as classical scattering, and quantum contributions. Such
a distinction lets us derive general results concerning light scattering. Finally,
possible extensions to the developed formalism are discussed.
article_processing_charge: No
arxiv: 1
author:
- 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: Pedro
full_name: Amaro, Pedro
last_name: Amaro
- first_name: José
full_name: Santos, José
last_name: Santos
citation:
ama: Fratini F, Safari L, Amaro P, Santos J. Two-photon processes based on quantum
commutators. Physical Review A - Atomic, Molecular, and Optical Physics.
2018;97(4). doi:10.1103/PhysRevA.97.043842
apa: Fratini, F., Safari, L., Amaro, P., & Santos, J. (2018). Two-photon processes
based on quantum commutators. Physical Review A - Atomic, Molecular, and Optical
Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.97.043842
chicago: Fratini, Filippo, Laleh Safari, Pedro Amaro, and José Santos. “Two-Photon
Processes Based on Quantum Commutators.” Physical Review A - Atomic, Molecular,
and Optical Physics. American Physical Society, 2018. https://doi.org/10.1103/PhysRevA.97.043842.
ieee: F. Fratini, L. Safari, P. Amaro, and J. Santos, “Two-photon processes based
on quantum commutators,” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 97, no. 4. American Physical Society, 2018.
ista: Fratini F, Safari L, Amaro P, Santos J. 2018. Two-photon processes based on
quantum commutators. Physical Review A - Atomic, Molecular, and Optical Physics.
97(4).
mla: Fratini, Filippo, et al. “Two-Photon Processes Based on Quantum Commutators.”
Physical Review A - Atomic, Molecular, and Optical Physics, vol. 97, no.
4, American Physical Society, 2018, doi:10.1103/PhysRevA.97.043842.
short: F. Fratini, L. Safari, P. Amaro, J. Santos, Physical Review A - Atomic, Molecular,
and Optical Physics 97 (2018).
date_created: 2018-12-11T11:45:40Z
date_published: 2018-04-18T00:00:00Z
date_updated: 2023-09-19T10:17:56Z
day: '18'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.97.043842
ec_funded: 1
external_id:
arxiv:
- '1801.06892'
isi:
- '000430296800008'
intvolume: ' 97'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1801.06892
month: '04'
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 A - Atomic, Molecular, and Optical Physics
publication_status: published
publisher: American Physical Society
publist_id: '7587'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Two-photon processes based on quantum commutators
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 97
year: '2018'
...
---
_id: '415'
abstract:
- lang: eng
text: Recently it was shown that a molecule rotating in a quantum solvent can be
described in terms of the “angulon” quasiparticle [M. Lemeshko, Phys. Rev. Lett.
118, 095301 (2017)]. Here we extend the angulon theory to the case of molecules
possessing an additional spin-1/2 degree of freedom and study the behavior of
the system in the presence of a static magnetic field. We show that exchange of
angular momentum between the molecule and the solvent can be altered by the field,
even though the solvent itself is non-magnetic. In particular, we demonstrate
a possibility to control resonant emission of phonons with a given angular momentum
using a magnetic field.
acknowledgement: "We acknowledge insightful discussions with Giacomo Bighin, Igor
Cherepanov, Johan Mentink, and Enderalp Yakaboylu. This work was supported by the
Austrian Science Fund (FWF), Project No. P29902-N27. W.R. was supported by the Polish
Ministry of Science and Higher Education Grant No. MNISW/2016/DIR/285/NN and by
the European Union’s Horizon 2020 research and innovation programme under the Marie
Skłodowska-Curie Grant Agreement No. 665385.\r\n"
article_number: '104307'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Wojciech
full_name: Rzadkowski, Wojciech
id: 48C55298-F248-11E8-B48F-1D18A9856A87
last_name: Rzadkowski
orcid: 0000-0002-1106-4419
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Rzadkowski W, Lemeshko M. Effect of a magnetic field on molecule–solvent angular
momentum transfer. The Journal of Chemical Physics. 2018;148(10). doi:10.1063/1.5017591
apa: Rzadkowski, W., & Lemeshko, M. (2018). Effect of a magnetic field on molecule–solvent
angular momentum transfer. The Journal of Chemical Physics. AIP Publishing.
https://doi.org/10.1063/1.5017591
chicago: Rzadkowski, Wojciech, and Mikhail Lemeshko. “Effect of a Magnetic Field
on Molecule–Solvent Angular Momentum Transfer.” The Journal of Chemical Physics.
AIP Publishing, 2018. https://doi.org/10.1063/1.5017591.
ieee: W. Rzadkowski and M. Lemeshko, “Effect of a magnetic field on molecule–solvent
angular momentum transfer,” The Journal of Chemical Physics, vol. 148,
no. 10. AIP Publishing, 2018.
ista: Rzadkowski W, Lemeshko M. 2018. Effect of a magnetic field on molecule–solvent
angular momentum transfer. The Journal of Chemical Physics. 148(10), 104307.
mla: Rzadkowski, Wojciech, and Mikhail Lemeshko. “Effect of a Magnetic Field on
Molecule–Solvent Angular Momentum Transfer.” The Journal of Chemical Physics,
vol. 148, no. 10, 104307, AIP Publishing, 2018, doi:10.1063/1.5017591.
short: W. Rzadkowski, M. Lemeshko, The Journal of Chemical Physics 148 (2018).
date_created: 2018-12-11T11:46:21Z
date_published: 2018-03-14T00:00:00Z
date_updated: 2024-02-28T13:01:59Z
day: '14'
department:
- _id: MiLe
doi: 10.1063/1.5017591
ec_funded: 1
external_id:
arxiv:
- '1711.09904'
isi:
- '000427517200065'
intvolume: ' 148'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1711.09904
month: '03'
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
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: The Journal of Chemical Physics
publication_status: published
publisher: AIP Publishing
publist_id: '7408'
quality_controlled: '1'
related_material:
record:
- id: '10759'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Effect of a magnetic field on molecule–solvent angular momentum transfer
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 148
year: '2018'
...
---
_id: '417'
abstract:
- lang: eng
text: 'We introduce a Diagrammatic Monte Carlo (DiagMC) approach to complex molecular
impurities with rotational degrees of freedom interacting with a many-particle
environment. The treatment is based on the diagrammatic expansion that merges
the usual Feynman diagrams with the angular momentum diagrams known from atomic
and nuclear structure theory, thereby incorporating the non-Abelian algebra inherent
to quantum rotations. Our approach works at arbitrary coupling, is free of systematic
errors and of finite size effects, and naturally provides access to the impurity
Green function. We exemplify the technique by obtaining an all-coupling solution
of the angulon model, however, the method is quite general and can be applied
to a broad variety of quantum impurities possessing angular momentum degrees of
freedom. '
article_number: '165301'
article_processing_charge: No
arxiv: 1
author:
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Timur
full_name: Tscherbul, Timur
last_name: Tscherbul
- 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, Tscherbul T, Lemeshko M. Diagrammatic Monte Carlo approach to rotating
molecular impurities. Physical Review Letters. 2018;121(16). doi:10.1103/PhysRevLett.121.165301
apa: Bighin, G., Tscherbul, T., & Lemeshko, M. (2018). Diagrammatic Monte Carlo
approach to rotating molecular impurities. Physical Review Letters. American
Physical Society. https://doi.org/10.1103/PhysRevLett.121.165301
chicago: Bighin, Giacomo, Timur Tscherbul, and Mikhail Lemeshko. “Diagrammatic Monte
Carlo Approach to Rotating Molecular Impurities.” Physical Review Letters.
American Physical Society, 2018. https://doi.org/10.1103/PhysRevLett.121.165301.
ieee: G. Bighin, T. Tscherbul, and M. Lemeshko, “Diagrammatic Monte Carlo approach
to rotating molecular impurities,” Physical Review Letters, vol. 121, no.
16. American Physical Society, 2018.
ista: Bighin G, Tscherbul T, Lemeshko M. 2018. Diagrammatic Monte Carlo approach
to rotating molecular impurities. Physical Review Letters. 121(16), 165301.
mla: Bighin, Giacomo, et al. “Diagrammatic Monte Carlo Approach to Rotating Molecular
Impurities.” Physical Review Letters, vol. 121, no. 16, 165301, American
Physical Society, 2018, doi:10.1103/PhysRevLett.121.165301.
short: G. Bighin, T. Tscherbul, M. Lemeshko, Physical Review Letters 121 (2018).
date_created: 2018-12-11T11:46:22Z
date_published: 2018-10-16T00:00:00Z
date_updated: 2024-02-28T13:14:53Z
day: '16'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.121.165301
external_id:
arxiv:
- '1803.07990'
intvolume: ' 121'
issue: '16'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1803.07990
month: '10'
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: '8025'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Diagrammatic Monte Carlo approach to rotating molecular impurities
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 121
year: '2018'
...
---
_id: '420'
abstract:
- lang: eng
text: We analyze the theoretical derivation of the beyond-mean-field equation of
state for two-dimensional gas of dilute, ultracold alkali-metal atoms in the Bardeen–Cooper–Schrieffer
(BCS) to Bose–Einstein condensate (BEC) crossover. We show that at zero temperature
our theory — considering Gaussian fluctuations on top of the mean-field equation
of state — is in very good agreement with experimental data. Subsequently, we
investigate the superfluid density at finite temperature and its renormalization
due to the proliferation of vortex–antivortex pairs. By doing so, we determine
the Berezinskii–Kosterlitz–Thouless (BKT) critical temperature — at which the
renormalized superfluid density jumps to zero — as a function of the inter-atomic
potential strength. We find that the Nelson–Kosterlitz criterion overestimates
the BKT temperature with respect to the renormalization group equations, this
effect being particularly relevant in the intermediate regime of the crossover.
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: Luca
full_name: Salasnich, Luca
last_name: Salasnich
citation:
ama: Bighin G, Salasnich L. Renormalization of the superfluid density in the two-dimensional
BCS-BEC crossover. International Journal of Modern Physics B. 2018;32(17):1840022.
doi:10.1142/S0217979218400222
apa: Bighin, G., & Salasnich, L. (2018). Renormalization of the superfluid density
in the two-dimensional BCS-BEC crossover. International Journal of Modern Physics
B. World Scientific Publishing. https://doi.org/10.1142/S0217979218400222
chicago: Bighin, Giacomo, and Luca Salasnich. “Renormalization of the Superfluid
Density in the Two-Dimensional BCS-BEC Crossover.” International Journal of
Modern Physics B. World Scientific Publishing, 2018. https://doi.org/10.1142/S0217979218400222.
ieee: G. Bighin and L. Salasnich, “Renormalization of the superfluid density in
the two-dimensional BCS-BEC crossover,” International Journal of Modern Physics
B, vol. 32, no. 17. World Scientific Publishing, p. 1840022, 2018.
ista: Bighin G, Salasnich L. 2018. Renormalization of the superfluid density in
the two-dimensional BCS-BEC crossover. International Journal of Modern Physics
B. 32(17), 1840022.
mla: Bighin, Giacomo, and Luca Salasnich. “Renormalization of the Superfluid Density
in the Two-Dimensional BCS-BEC Crossover.” International Journal of Modern
Physics B, vol. 32, no. 17, World Scientific Publishing, 2018, p. 1840022,
doi:10.1142/S0217979218400222.
short: G. Bighin, L. Salasnich, International Journal of Modern Physics B 32 (2018)
1840022.
date_created: 2018-12-11T11:46:22Z
date_published: 2018-07-10T00:00:00Z
date_updated: 2023-09-18T08:09:59Z
day: '10'
department:
- _id: MiLe
doi: 10.1142/S0217979218400222
external_id:
isi:
- '000438217300007'
intvolume: ' 32'
isi: 1
issue: '17'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1710.11171
month: '07'
oa: 1
oa_version: Preprint
page: '1840022'
publication: International Journal of Modern Physics B
publication_status: published
publisher: World Scientific Publishing
publist_id: '7402'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Renormalization of the superfluid density in the two-dimensional BCS-BEC crossover
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 32
year: '2018'
...
---
_id: '427'
abstract:
- lang: eng
text: We investigate the quantum interference induced shifts between energetically
close states in highly charged ions, with the energy structure being observed
by laser spectroscopy. In this work, we focus on hyperfine states of lithiumlike
heavy-Z isotopes and quantify how much quantum interference changes the observed
transition frequencies. The process of photon excitation and subsequent photon
decay for the transition 2s→2p→2s is implemented with fully relativistic and full-multipole
frameworks, which are relevant for such relativistic atomic systems. We consider
the isotopes Pb79+207 and Bi80+209 due to experimental interest, as well as other
examples of isotopes with lower Z, namely Pr56+141 and Ho64+165. We conclude that
quantum interference can induce shifts up to 11% of the linewidth in the measurable
resonances of the considered isotopes, if interference between resonances is neglected.
The inclusion of relativity decreases the cross section by 35%, mainly due to
the complete retardation form of the electric dipole multipole. However, the contribution
of the next higher multipoles (e.g., magnetic quadrupole) to the cross section
is negligible. This makes the contribution of relativity and higher-order multipoles
to the quantum interference induced shifts a minor effect, even for heavy-Z elements.
acknowledgement: "This work was funded by the Portuguese Fundação para a Ciência e
a Tecnologia (FCT/MCTES/PIDDAC) under Grant No. UID/FIS/04559/2013 (LIBPhys). P.A.
acknowledges the support of the FCT, under Contract No. SFRH/BPD/92329/2013. L.S.
acknowledges financial support from the People Programme (Marie Curie Actions) of
the European Union's Seventh Framework Programme (FP7/2007-2013) under REA Grant
Agreement No. (291734). Laboratoire Kastler Brossel (LKB) is “Unité Mixte de Recherche
de Sorbonne Université, de ENS-PSL Research University, du Collège de France et
du CNRS No. 8552.” APPENDIX:\r\n"
article_number: '022510'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Pedro
full_name: Amaro, Pedro
last_name: Amaro
- first_name: Ulisses
full_name: Loureiro, Ulisses
last_name: Loureiro
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Filippo
full_name: Fratini, Filippo
last_name: Fratini
- first_name: Paul
full_name: Indelicato, Paul
last_name: Indelicato
- first_name: Thomas
full_name: Stöhlker, Thomas
last_name: Stöhlker
- first_name: José
full_name: Santos, José
last_name: Santos
citation:
ama: Amaro P, Loureiro U, Safari L, et al. Quantum interference in laser spectroscopy
of highly charged lithiumlike ions. Physical Review A - Atomic, Molecular,
and Optical Physics. 2018;97(2). doi:10.1103/PhysRevA.97.022510
apa: Amaro, P., Loureiro, U., Safari, L., Fratini, F., Indelicato, P., Stöhlker,
T., & Santos, J. (2018). Quantum interference in laser spectroscopy of highly
charged lithiumlike ions. Physical Review A - Atomic, Molecular, and Optical
Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.97.022510
chicago: Amaro, Pedro, Ulisses Loureiro, Laleh Safari, Filippo Fratini, Paul Indelicato,
Thomas Stöhlker, and José Santos. “Quantum Interference in Laser Spectroscopy
of Highly Charged Lithiumlike Ions.” Physical Review A - Atomic, Molecular,
and Optical Physics. American Physical Society, 2018. https://doi.org/10.1103/PhysRevA.97.022510.
ieee: P. Amaro et al., “Quantum interference in laser spectroscopy of highly
charged lithiumlike ions,” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 97, no. 2. American Physical Society, 2018.
ista: Amaro P, Loureiro U, Safari L, Fratini F, Indelicato P, Stöhlker T, Santos
J. 2018. Quantum interference in laser spectroscopy of highly charged lithiumlike
ions. Physical Review A - Atomic, Molecular, and Optical Physics. 97(2), 022510.
mla: Amaro, Pedro, et al. “Quantum Interference in Laser Spectroscopy of Highly
Charged Lithiumlike Ions.” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 97, no. 2, 022510, American Physical Society, 2018, doi:10.1103/PhysRevA.97.022510.
short: P. Amaro, U. Loureiro, L. Safari, F. Fratini, P. Indelicato, T. Stöhlker,
J. Santos, Physical Review A - Atomic, Molecular, and Optical Physics 97 (2018).
date_created: 2018-12-11T11:46:25Z
date_published: 2018-02-21T00:00:00Z
date_updated: 2023-09-15T12:09:35Z
day: '21'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.97.022510
ec_funded: 1
external_id:
arxiv:
- '1802.07920'
isi:
- '000425601000004'
intvolume: ' 97'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1802.07920
month: '02'
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: '7396'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantum interference in laser spectroscopy of highly charged lithiumlike ions
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 97
year: '2018'
...
---
_id: '435'
abstract:
- lang: eng
text: It is shown that two fundamentally different phenomena, the bound states in
continuum and the spectral singularity (or time-reversed spectral singularity),
can occur simultaneously. This can be achieved in a rectangular core dielectric
waveguide with an embedded active (or absorbing) layer. In such a system a two-dimensional
bound state in a continuum is created in the plane of a waveguide cross section,
and it is emitted or absorbed along the waveguide core. The idea can be used for
experimental implementation of a laser or a coherent-perfect-absorber for a photonic
bound state that resides in a continuous spectrum.
acknowledgement: 'Seventh Framework Programme (FP7) People: Marie-Curie Actions (PEOPLE)
(291734). B. M. acknowledges the financial support by the People Programme (Marie
Curie Actions) of the European Union’s Seventh Framework Programme (FP7/ 2007-2013)
under REA.'
article_processing_charge: No
arxiv: 1
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. Coherent-perfect-absorber and laser for bound states in
a continuum. Optics Letters. 2018;43(3):607-610. doi:10.1364/OL.43.000607
apa: Midya, B., & Konotop, V. (2018). Coherent-perfect-absorber and laser for
bound states in a continuum. Optics Letters. Optica Publishing Group.
https://doi.org/10.1364/OL.43.000607
chicago: Midya, Bikashkali, and Vladimir Konotop. “Coherent-Perfect-Absorber and
Laser for Bound States in a Continuum.” Optics Letters. Optica Publishing
Group, 2018. https://doi.org/10.1364/OL.43.000607.
ieee: B. Midya and V. Konotop, “Coherent-perfect-absorber and laser for bound states
in a continuum,” Optics Letters, vol. 43, no. 3. Optica Publishing Group,
pp. 607–610, 2018.
ista: Midya B, Konotop V. 2018. Coherent-perfect-absorber and laser for bound states
in a continuum. Optics Letters. 43(3), 607–610.
mla: Midya, Bikashkali, and Vladimir Konotop. “Coherent-Perfect-Absorber and Laser
for Bound States in a Continuum.” Optics Letters, vol. 43, no. 3, Optica
Publishing Group, 2018, pp. 607–10, doi:10.1364/OL.43.000607.
short: B. Midya, V. Konotop, Optics Letters 43 (2018) 607–610.
date_created: 2018-12-11T11:46:27Z
date_published: 2018-02-01T00:00:00Z
date_updated: 2023-10-17T12:15:06Z
day: '01'
department:
- _id: MiLe
doi: 10.1364/OL.43.000607
ec_funded: 1
external_id:
arxiv:
- '1711.01986'
isi:
- '000423776600066'
intvolume: ' 43'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1711.01986
month: '02'
oa: 1
oa_version: Preprint
page: 607 - 610
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: '7388'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Coherent-perfect-absorber and laser for bound states in a continuum
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 43
year: '2018'
...
---
_id: '939'
abstract:
- lang: eng
text: We reveal the existence of continuous families of guided single-mode solitons
in planar waveguides with weakly nonlinear active core and absorbing boundaries.
Stable propagation of TE and TM-polarized solitons is accompanied by attenuation
of all other modes, i.e., the waveguide features properties of conservative and
dissipative systems. If the linear spectrum of the waveguide possesses exceptional
points, which occurs in the case of TM polarization, an originally focusing (defocusing)
material nonlinearity may become effectively defocusing (focusing). This occurs
due to the geometric phase of the carried eigenmode when the surface impedance
encircles the exceptional point. In its turn, the change of the effective nonlinearity
ensures the existence of dark (bright) solitons in spite of focusing (defocusing)
Kerr nonlinearity of the core. The existence of an exceptional point can also
result in anomalous enhancement of the effective nonlinearity. In terms of practical
applications, the nonlinearity of the reported waveguide can be manipulated by
controlling the properties of the absorbing cladding.
article_number: '033905'
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. Waveguides with absorbing boundaries: Nonlinearity controlled
by an exceptional point and solitons. Physical Review Letters. 2017;119(3).
doi:10.1103/PhysRevLett.119.033905'
apa: 'Midya, B., & Konotop, V. (2017). Waveguides with absorbing boundaries:
Nonlinearity controlled by an exceptional point and solitons. Physical Review
Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.119.033905'
chicago: 'Midya, Bikashkali, and Vladimir Konotop. “Waveguides with Absorbing Boundaries:
Nonlinearity Controlled by an Exceptional Point and Solitons.” Physical Review
Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.119.033905.'
ieee: 'B. Midya and V. Konotop, “Waveguides with absorbing boundaries: Nonlinearity
controlled by an exceptional point and solitons,” Physical Review Letters,
vol. 119, no. 3. American Physical Society, 2017.'
ista: 'Midya B, Konotop V. 2017. Waveguides with absorbing boundaries: Nonlinearity
controlled by an exceptional point and solitons. Physical Review Letters. 119(3),
033905.'
mla: 'Midya, Bikashkali, and Vladimir Konotop. “Waveguides with Absorbing Boundaries:
Nonlinearity Controlled by an Exceptional Point and Solitons.” Physical Review
Letters, vol. 119, no. 3, 033905, American Physical Society, 2017, doi:10.1103/PhysRevLett.119.033905.'
short: B. Midya, V. Konotop, Physical Review Letters 119 (2017).
date_created: 2018-12-11T11:49:18Z
date_published: 2017-07-18T00:00:00Z
date_updated: 2023-09-26T15:39:46Z
day: '18'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.119.033905
ec_funded: 1
external_id:
isi:
- '000405718200012'
intvolume: ' 119'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: 'https://arxiv.org/abs/1706.04085 '
month: '07'
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 Letters
publication_identifier:
issn:
- '00319007'
publication_status: published
publisher: American Physical Society
publist_id: '6481'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional
point and solitons'
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 119
year: '2017'
...
---
_id: '6013'
abstract:
- lang: eng
text: The first hundred attoseconds of the electron dynamics during strong field
tunneling ionization are investigated. We quantify theoretically how the electron’s
classical trajectories in the continuum emerge from the tunneling process and
test the results with those achieved in parallel from attoclock measurements.
An especially high sensitivity on the tunneling barrier is accomplished here by
comparing the momentum distributions of two atomic species of slightly deviating
atomic potentials (argon and krypton) being ionized under absolutely identical
conditions with near-infrared laser pulses (1300 nm). The agreement between experiment
and theory provides clear evidence for a nonzero tunneling time delay and a nonvanishing
longitudinal momentum of the electron at the “tunnel exit.”
article_number: '023201'
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 Z.
full_name: Hatsagortsyan, Karen Z.
last_name: Hatsagortsyan
- first_name: Thomas
full_name: Pfeifer, Thomas
last_name: Pfeifer
- first_name: Christoph H.
full_name: Keitel, Christoph H.
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 quantum tunneling
time. Physical Review Letters. 2017;119(2). doi:10.1103/PhysRevLett.119.023201
apa: Camus, N., Yakaboylu, E., Fechner, L., Klaiber, M., Laux, M., Mi, Y., … Moshammer,
R. (2017). Experimental evidence for quantum tunneling time. Physical Review
Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.119.023201
chicago: Camus, Nicolas, Enderalp Yakaboylu, Lutz Fechner, Michael Klaiber, Martin
Laux, Yonghao Mi, Karen Z. Hatsagortsyan, Thomas Pfeifer, Christoph H. Keitel,
and Robert Moshammer. “Experimental Evidence for Quantum Tunneling Time.” Physical
Review Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.119.023201.
ieee: N. Camus et al., “Experimental evidence for quantum tunneling time,”
Physical Review Letters, vol. 119, no. 2. American Physical Society, 2017.
ista: Camus N, Yakaboylu E, Fechner L, Klaiber M, Laux M, Mi Y, Hatsagortsyan KZ,
Pfeifer T, Keitel CH, Moshammer R. 2017. Experimental evidence for quantum tunneling
time. Physical Review Letters. 119(2), 023201.
mla: Camus, Nicolas, et al. “Experimental Evidence for Quantum Tunneling Time.”
Physical Review Letters, vol. 119, no. 2, 023201, American Physical Society,
2017, doi:10.1103/PhysRevLett.119.023201.
short: N. Camus, E. Yakaboylu, L. Fechner, M. Klaiber, M. Laux, Y. Mi, K.Z. Hatsagortsyan,
T. Pfeifer, C.H. Keitel, R. Moshammer, Physical Review Letters 119 (2017).
date_created: 2019-02-14T15:24:13Z
date_published: 2017-07-14T00:00:00Z
date_updated: 2023-02-23T11:13:36Z
day: '14'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.119.023201
external_id:
arxiv:
- '1611.03701'
intvolume: ' 119'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1611.03701
month: '07'
oa: 1
oa_version: Preprint
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '313'
relation: earlier_version
status: public
scopus_import: 1
status: public
title: Experimental evidence for quantum tunneling time
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 119
year: '2017'
...
---
_id: '604'
abstract:
- lang: eng
text: In several settings of physics and chemistry one has to deal with molecules
interacting with some kind of an external environment, be it a gas, a solution,
or a crystal surface. Understanding molecular processes in the presence of such
a many-particle bath is inherently challenging, and usually requires large-scale
numerical computations. Here, we present an alternative approach to the problem,
based on the notion of the angulon quasiparticle. We show that molecules rotating
inside superfluid helium nanodroplets and Bose–Einstein condensates form angulons,
and therefore can be described by straightforward solutions of a simple microscopic
Hamiltonian. Casting the problem in the language of angulons allows us not only
to greatly simplify it, but also to gain insights into the origins of the observed
phenomena and to make predictions for future experimental studies.
alternative_title:
- Theoretical and Computational Chemistry Series
author:
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Richard
full_name: Schmidt, Richard
last_name: Schmidt
citation:
ama: 'Lemeshko M, Schmidt R. Molecular impurities interacting with a many-particle
environment: From ultracold gases to helium nanodroplets. In: Dulieu O, Osterwalder
A, eds. Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero
. Vol 11. Theoretical and Computational Chemistry Series. The Royal Society
of Chemistry; 2017:444-495. doi:10.1039/9781782626800-00444'
apa: 'Lemeshko, M., & Schmidt, R. (2017). Molecular impurities interacting with
a many-particle environment: From ultracold gases to helium nanodroplets. In O.
Dulieu & A. Osterwalder (Eds.), Cold Chemistry: Molecular Scattering and
Reactivity Near Absolute Zero (Vol. 11, pp. 444–495). The Royal Society of
Chemistry. https://doi.org/10.1039/9781782626800-00444'
chicago: 'Lemeshko, Mikhail, and Richard Schmidt. “Molecular Impurities Interacting
with a Many-Particle Environment: From Ultracold Gases to Helium Nanodroplets.”
In Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero ,
edited by Oliver Dulieu and Andreas Osterwalder, 11:444–95. Theoretical and Computational
Chemistry Series. The Royal Society of Chemistry, 2017. https://doi.org/10.1039/9781782626800-00444.'
ieee: 'M. Lemeshko and R. Schmidt, “Molecular impurities interacting with a many-particle
environment: From ultracold gases to helium nanodroplets,” in Cold Chemistry:
Molecular Scattering and Reactivity Near Absolute Zero , vol. 11, O. Dulieu
and A. Osterwalder, Eds. The Royal Society of Chemistry, 2017, pp. 444–495.'
ista: 'Lemeshko M, Schmidt R. 2017.Molecular impurities interacting with a many-particle
environment: From ultracold gases to helium nanodroplets. In: Cold Chemistry:
Molecular Scattering and Reactivity Near Absolute Zero . Theoretical and Computational
Chemistry Series, vol. 11, 444–495.'
mla: 'Lemeshko, Mikhail, and Richard Schmidt. “Molecular Impurities Interacting
with a Many-Particle Environment: From Ultracold Gases to Helium Nanodroplets.”
Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero ,
edited by Oliver Dulieu and Andreas Osterwalder, vol. 11, The Royal Society of
Chemistry, 2017, pp. 444–95, doi:10.1039/9781782626800-00444.'
short: 'M. Lemeshko, R. Schmidt, in:, O. Dulieu, A. Osterwalder (Eds.), Cold Chemistry:
Molecular Scattering and Reactivity Near Absolute Zero , The Royal Society of
Chemistry, 2017, pp. 444–495.'
date_created: 2018-12-11T11:47:27Z
date_published: 2017-12-14T00:00:00Z
date_updated: 2021-01-12T08:05:50Z
day: '14'
department:
- _id: MiLe
doi: 10.1039/9781782626800-00444
editor:
- first_name: Oliver
full_name: Dulieu, Oliver
last_name: Dulieu
- first_name: Andreas
full_name: Osterwalder, Andreas
last_name: Osterwalder
intvolume: ' 11'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1703.06753
month: '12'
oa: 1
oa_version: Submitted Version
page: 444 - 495
publication: 'Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero '
publication_identifier:
issn:
- '20413181'
publication_status: published
publisher: The Royal Society of Chemistry
publist_id: '7201'
quality_controlled: '1'
scopus_import: 1
series_title: Theoretical and Computational Chemistry Series
status: public
title: 'Molecular impurities interacting with a many-particle environment: From ultracold
gases to helium nanodroplets'
type: book_chapter
user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2017'
...
---
_id: '1015'
abstract:
- lang: eng
text: 'Vortices are commonly observed in the context of classical hydrodynamics:
from whirlpools after stirring the coffee in a cup to a violent atmospheric phenomenon
such as a tornado, all classical vortices are characterized by an arbitrary circulation
value of the local velocity field. On the other hand the appearance of vortices
with quantized circulation represents one of the fundamental signatures of macroscopic
quantum phenomena. In two-dimensional superfluids quantized vortices play a key
role in determining finite-temperature properties, as the superfluid phase and
the normal state are separated by a vortex unbinding transition, the Berezinskii-Kosterlitz-Thouless
transition. Very recent experiments with two-dimensional superfluid fermions motivate
the present work: we present theoretical results based on the renormalization
group showing that the universal jump of the superfluid density and the critical
temperature crucially depend on the interaction strength, providing a strong benchmark
for forthcoming investigations.'
article_number: '45702'
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: Luca
full_name: Salasnich, Luca
last_name: Salasnich
citation:
ama: Bighin G, Salasnich L. Vortices and antivortices in two-dimensional ultracold
Fermi gases. Scientific Reports. 2017;7. doi:10.1038/srep45702
apa: Bighin, G., & Salasnich, L. (2017). Vortices and antivortices in two-dimensional
ultracold Fermi gases. Scientific Reports. Nature Publishing Group. https://doi.org/10.1038/srep45702
chicago: Bighin, Giacomo, and Luca Salasnich. “Vortices and Antivortices in Two-Dimensional
Ultracold Fermi Gases.” Scientific Reports. Nature Publishing Group, 2017.
https://doi.org/10.1038/srep45702.
ieee: G. Bighin and L. Salasnich, “Vortices and antivortices in two-dimensional
ultracold Fermi gases,” Scientific Reports, vol. 7. Nature Publishing Group,
2017.
ista: Bighin G, Salasnich L. 2017. Vortices and antivortices in two-dimensional
ultracold Fermi gases. Scientific Reports. 7, 45702.
mla: Bighin, Giacomo, and Luca Salasnich. “Vortices and Antivortices in Two-Dimensional
Ultracold Fermi Gases.” Scientific Reports, vol. 7, 45702, Nature Publishing
Group, 2017, doi:10.1038/srep45702.
short: G. Bighin, L. Salasnich, Scientific Reports 7 (2017).
date_created: 2018-12-11T11:49:42Z
date_published: 2017-04-04T00:00:00Z
date_updated: 2023-09-22T09:43:10Z
day: '04'
ddc:
- '539'
department:
- _id: MiLe
doi: 10.1038/srep45702
external_id:
isi:
- '000398148100001'
file:
- access_level: open_access
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:12:32Z
date_updated: 2018-12-12T10:12:32Z
file_id: '4950'
file_name: IST-2017-809-v1+1_srep45702.pdf
file_size: 478289
relation: main_file
file_date_updated: 2018-12-12T10:12:32Z
has_accepted_license: '1'
intvolume: ' 7'
isi: 1
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
publication: Scientific Reports
publication_identifier:
issn:
- '20452322'
publication_status: published
publisher: Nature Publishing Group
publist_id: '6380'
pubrep_id: '809'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Vortices and antivortices in two-dimensional ultracold Fermi gases
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 7
year: '2017'
...
---
_id: '1076'
abstract:
- lang: eng
text: Signatures of the Coulomb corrections in the photoelectron momentum distribution
during laser-induced ionization of atoms or ions in tunneling and multiphoton
regimes are investigated analytically in the case of a one-dimensional problem.
A high-order Coulomb-corrected strong-field approximation is applied, where the
exact continuum state in the S matrix is approximated by the eikonal Coulomb-Volkov
state including the second-order corrections to the eikonal. Although without
high-order corrections our theory coincides with the known analytical R-matrix
(ARM) theory, we propose a simplified procedure for the matrix element derivation.
Rather than matching the eikonal Coulomb-Volkov wave function with the bound state
as in the ARM theory to remove the Coulomb singularity, we calculate the matrix
element via the saddle-point integration method by time as well as by coordinate,
and in this way avoiding the Coulomb singularity. The momentum shift in the photoelectron
momentum distribution with respect to the ARM theory due to high-order corrections
is analyzed for tunneling and multiphoton regimes. The relation of the quantum
corrections to the tunneling delay time is discussed.
article_number: '023403'
article_processing_charge: No
author:
- first_name: Michael
full_name: Klaiber, Michael
last_name: Klaiber
- first_name: Jiří
full_name: Daněk, Jiří
last_name: Daněk
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Karen
full_name: Hatsagortsyan, Karen
last_name: Hatsagortsyan
- first_name: Christoph
full_name: Keitel, Christoph
last_name: Keitel
citation:
ama: Klaiber M, Daněk J, Yakaboylu E, Hatsagortsyan K, Keitel C. Strong-field ionization
via a high-order Coulomb-corrected strong-field approximation. Physical Review
A - Atomic, Molecular, and Optical Physics. 2017;95(2). doi:10.1103/PhysRevA.95.023403
apa: Klaiber, M., Daněk, J., Yakaboylu, E., Hatsagortsyan, K., & Keitel, C.
(2017). Strong-field ionization via a high-order Coulomb-corrected strong-field
approximation. Physical Review A - Atomic, Molecular, and Optical Physics.
American Physical Society. https://doi.org/10.1103/PhysRevA.95.023403
chicago: Klaiber, Michael, Jiří Daněk, Enderalp Yakaboylu, Karen Hatsagortsyan,
and Christoph Keitel. “Strong-Field Ionization via a High-Order Coulomb-Corrected
Strong-Field Approximation.” Physical Review A - Atomic, Molecular, and Optical
Physics. American Physical Society, 2017. https://doi.org/10.1103/PhysRevA.95.023403.
ieee: M. Klaiber, J. Daněk, E. Yakaboylu, K. Hatsagortsyan, and C. Keitel, “Strong-field
ionization via a high-order Coulomb-corrected strong-field approximation,”
Physical Review A - Atomic, Molecular, and Optical Physics, vol. 95, no. 2.
American Physical Society, 2017.
ista: Klaiber M, Daněk J, Yakaboylu E, Hatsagortsyan K, Keitel C. 2017. Strong-field
ionization via a high-order Coulomb-corrected strong-field approximation. Physical
Review A - Atomic, Molecular, and Optical Physics. 95(2), 023403.
mla: Klaiber, Michael, et al. “Strong-Field Ionization via a High-Order Coulomb-Corrected
Strong-Field Approximation.” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 95, no. 2, 023403, American Physical Society, 2017, doi:10.1103/PhysRevA.95.023403.
short: M. Klaiber, J. Daněk, E. Yakaboylu, K. Hatsagortsyan, C. Keitel, Physical
Review A - Atomic, Molecular, and Optical Physics 95 (2017).
date_created: 2018-12-11T11:50:01Z
date_published: 2017-02-01T00:00:00Z
date_updated: 2023-09-20T11:57:23Z
day: '01'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.95.023403
ec_funded: 1
external_id:
isi:
- '000400571700011'
intvolume: ' 95'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1609.07018
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
publication: ' Physical Review A - Atomic, Molecular, and Optical Physics'
publication_identifier:
issn:
- '24699926'
publication_status: published
publisher: American Physical Society
publist_id: '6305'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Strong-field ionization via a high-order Coulomb-corrected strong-field approximation
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 95
year: '2017'
...
---
_id: '994'
abstract:
- lang: eng
text: The formation of vortices is usually considered to be the main mechanism of
angular momentum disposal in superfluids. Recently, it was predicted that a superfluid
can acquire angular momentum via an alternative, microscopic route -- namely,
through interaction with rotating impurities, forming so-called `angulon quasiparticles'
[Phys. Rev. Lett. 114, 203001 (2015)]. The angulon instabilities correspond to
transfer of a small number of angular momentum quanta from the impurity to the
superfluid, as opposed to vortex instabilities, where angular momentum is quantized
in units of ℏ per atom. Furthermore, since conventional impurities (such as molecules)
represent three-dimensional (3D) rotors, the angular momentum transferred is intrinsically
3D as well, as opposed to a merely planar rotation which is inherent to vortices.
Herein we show that the angulon theory can explain the anomalous broadening of
the spectroscopic lines observed for CH 3 and NH 3 molecules in superfluid
helium nanodroplets, thereby providing a fingerprint of the emerging angulon instabilities
in experiment.
article_processing_charge: No
author:
- first_name: Igor
full_name: Cherepanov, Igor
id: 339C7E5A-F248-11E8-B48F-1D18A9856A87
last_name: Cherepanov
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Cherepanov I, Lemeshko M. Fingerprints of angulon instabilities in the spectra
of matrix-isolated molecules. Physical Review Materials. 2017;1(3). doi:10.1103/PhysRevMaterials.1.035602
apa: Cherepanov, I., & Lemeshko, M. (2017). Fingerprints of angulon instabilities
in the spectra of matrix-isolated molecules. Physical Review Materials.
American Physical Society. https://doi.org/10.1103/PhysRevMaterials.1.035602
chicago: Cherepanov, Igor, and Mikhail Lemeshko. “Fingerprints of Angulon Instabilities
in the Spectra of Matrix-Isolated Molecules.” Physical Review Materials.
American Physical Society, 2017. https://doi.org/10.1103/PhysRevMaterials.1.035602.
ieee: I. Cherepanov and M. Lemeshko, “Fingerprints of angulon instabilities in the
spectra of matrix-isolated molecules,” Physical Review Materials, vol.
1, no. 3. American Physical Society, 2017.
ista: Cherepanov I, Lemeshko M. 2017. Fingerprints of angulon instabilities in the
spectra of matrix-isolated molecules. Physical Review Materials. 1(3).
mla: Cherepanov, Igor, and Mikhail Lemeshko. “Fingerprints of Angulon Instabilities
in the Spectra of Matrix-Isolated Molecules.” Physical Review Materials,
vol. 1, no. 3, American Physical Society, 2017, doi:10.1103/PhysRevMaterials.1.035602.
short: I. Cherepanov, M. Lemeshko, Physical Review Materials 1 (2017).
date_created: 2018-12-11T11:49:35Z
date_published: 2017-08-08T00:00:00Z
date_updated: 2023-09-22T09:53:42Z
day: '08'
department:
- _id: MiLe
doi: 10.1103/PhysRevMaterials.1.035602
ec_funded: 1
external_id:
isi:
- '000416564000004'
intvolume: ' 1'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1705.09220
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
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: Physical Review Materials
publication_status: published
publisher: American Physical Society
publist_id: '6405'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 1
year: '2017'
...