@article{8634,
  abstract     = {In laboratory studies and numerical simulations, we observe clear signatures of unstable time-periodic solutions in a moderately turbulent quasi-two-dimensional flow. We validate the dynamical relevance of such solutions by demonstrating that turbulent flows in both experiment and numerics transiently display time-periodic dynamics when they shadow unstable periodic orbits (UPOs). We show that UPOs we computed are also statistically significant, with turbulent flows spending a sizable fraction of the total time near these solutions. As a result, the average rates of energy input and dissipation for the turbulent flow and frequently visited UPOs differ only by a few percent.},
  author       = {Suri, Balachandra and Kageorge, Logan and Grigoriev, Roman O. and Schatz, Michael F.},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {General Physics and Astronomy},
  number       = {6},
  publisher    = {American Physical Society},
  title        = {{Capturing turbulent dynamics and statistics in experiments with unstable periodic orbits}},
  doi          = {10.1103/physrevlett.125.064501},
  volume       = {125},
  year         = {2020},
}

@article{10344,
  abstract     = {In this study, we investigate the role of the surface patterning of nanostructures for cell membrane reshaping. To accomplish this, we combine an evolutionary algorithm with coarse-grained molecular dynamics simulations and explore the solution space of ligand patterns on a nanoparticle that promote efficient and reliable cell uptake. Surprisingly, we find that in the regime of low ligand number the best-performing structures are characterized by ligands arranged into long one-dimensional chains that pattern the surface of the particle. We show that these chains of ligands provide particles with high rotational freedom and they lower the free energy barrier for membrane crossing. Our approach reveals a set of nonintuitive design rules that can be used to inform artificial nanoparticle construction and the search for inhibitors of viral entry.},
  author       = {Forster, Joel C. and Krausser, Johannes and Vuyyuru, Manish R. and Baum, Buzz and Šarić, Anđela},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  number       = {22},
  publisher    = {American Physical Society},
  title        = {{Exploring the design rules for efficient membrane-reshaping nanostructures}},
  doi          = {10.1103/physrevlett.125.228101},
  volume       = {125},
  year         = {2020},
}

@article{10353,
  abstract     = {Experiments have suggested that bacterial mechanosensitive channels separate into 2D clusters, the role of which is unclear. By developing a coarse-grained computer model we find that clustering promotes the channel closure, which is highly dependent on the channel concentration and membrane stress. This behaviour yields a tightly regulated gating system, whereby at high tensions channels gate individually, and at lower tensions the channels spontaneously aggregate and inactivate. We implement this positive feedback into the model for cell volume regulation, and find that the channel clustering protects the cell against excessive loss of cytoplasmic content.},
  author       = {Paraschiv, Alexandru and Hegde, Smitha and Ganti, Raman and Pilizota, Teuta and Šarić, Anđela},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {general physics and astronomy},
  number       = {4},
  publisher    = {American Physical Society},
  title        = {{Dynamic clustering regulates activity of mechanosensitive membrane channels}},
  doi          = {10.1103/physrevlett.124.048102},
  volume       = {124},
  year         = {2020},
}

@article{9664,
  abstract     = {Equilibrium molecular dynamics simulations, in combination with the Green-Kubo (GK) method, have been extensively used to compute the thermal conductivity of liquids. However, the GK method relies on an ambiguous definition of the microscopic heat flux, which depends on how one chooses to distribute energies over atoms. This ambiguity makes it problematic to employ the GK method for systems with nonpairwise interactions. In this work, we show that the hydrodynamic description of thermally driven density fluctuations can be used to obtain the thermal conductivity of a bulk fluid unambiguously, thereby bypassing the need to define the heat flux. We verify that, for a model fluid with only pairwise interactions, our method yields estimates of thermal conductivity consistent with the GK approach. We apply our approach to compute the thermal conductivity of a nonpairwise additive water model at supercritical conditions, and of a liquid hydrogen system described by a machine-learning interatomic potential, at 33 GPa and 2000 K.},
  author       = {Cheng, Bingqing and Frenkel, Daan},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  number       = {13},
  publisher    = {American Physical Society},
  title        = {{Computing the heat conductivity of fluids from density fluctuations}},
  doi          = {10.1103/physrevlett.125.130602},
  volume       = {125},
  year         = {2020},
}

@article{6940,
  abstract     = {We study the effect of a linear tunneling coupling between two-dimensional systems, each separately
exhibiting the topological Berezinskii-Kosterlitz-Thouless (BKT) transition. In the uncoupled limit, there
are two phases: one where the one-body correlation functions are algebraically decaying and the other with
exponential decay. When the linear coupling is turned on, a third BKT-paired phase emerges, in which one-body correlations are exponentially decaying, while two-body correlation functions exhibit power-law
decay. We perform numerical simulations in the paradigmatic case of two coupled XY models at finite
temperature, finding evidences that for any finite value of the interlayer coupling, the BKT-paired phase is
present. We provide a picture of the phase diagram using a renormalization group approach.},
  author       = {Bighin, Giacomo and Defenu, Nicolò and Nándori, István and Salasnich, Luca and Trombettoni, Andrea},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  number       = {10},
  publisher    = {American Physical Society},
  title        = {{Berezinskii-Kosterlitz-Thouless paired phase in coupled XY models}},
  doi          = {10.1103/physrevlett.123.100601},
  volume       = {123},
  year         = {2019},
}

@article{5906,
  abstract     = {We introduce a simple, exactly solvable strong-randomness renormalization group (RG) model for the many-body localization (MBL) transition in one dimension. Our approach relies on a family of RG flows parametrized by the asymmetry between thermal and localized phases. We identify the physical MBL transition in the limit of maximal asymmetry, reflecting the instability of MBL against rare thermal inclusions. We find a critical point that is localized with power-law distributed thermal inclusions. The typical size of critical inclusions remains finite at the transition, while the average size is logarithmically diverging. We propose a two-parameter scaling theory for the many-body localization transition that falls into the Kosterlitz-Thouless universality class, with the MBL phase corresponding to a stable line of fixed points with multifractal behavior.},
  author       = {Goremykina, Anna and Vasseur, Romain and Serbyn, Maksym},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  number       = {4},
  publisher    = {American Physical Society},
  title        = {{Analytically solvable renormalization group for the many-body localization transition}},
  doi          = {10.1103/physrevlett.122.040601},
  volume       = {122},
  year         = {2019},
}

@article{10626,
  abstract     = {Owing to their wide tunability, multiple internal degrees of freedom, and low disorder, graphene heterostructures are emerging as a promising experimental platform for fractional quantum Hall (FQH) studies. Here, we report FQH thermal activation gap measurements in dual graphite-gated monolayer graphene devices fabricated in an edgeless Corbino geometry. In devices with substrate-induced sublattice splitting, we find a tunable crossover between single- and multicomponent FQH states in the zero energy Landau level. Activation gaps in the single-component regime show excellent agreement with numerical calculations using a single broadening parameter 
Γ≈7.2K. In the first excited Landau level, in contrast, FQH gaps are strongly influenced by Landau level mixing, and we observe an unexpected valley-ordered state at integer filling ν=−4.},
  author       = {Polshyn, Hryhoriy and Zhou, H. and Spanton, E. M. and Taniguchi, T. and Watanabe, K. and Young, A. F.},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {general physics and astronomy},
  number       = {22},
  publisher    = {American Physical Society},
  title        = {{Quantitative transport measurements of fractional quantum Hall energy gaps in edgeless graphene devices}},
  doi          = {10.1103/physrevlett.121.226801},
  volume       = {121},
  year         = {2018},
}

@article{9665,
  abstract     = {We investigate the thermodynamics and kinetics of a hydrogen interstitial in magnetic α-iron, taking account of the quantum fluctuations of the proton as well as the anharmonicities of lattice vibrations and hydrogen hopping. We show that the diffusivity of hydrogen in the lattice of bcc iron deviates strongly from an Arrhenius behavior at and below room temperature. We compare a quantum transition state theory to explicit ring polymer molecular dynamics in the calculation of diffusivity. We then address the trapping of hydrogen by a vacancy as a prototype lattice defect. By a sequence of steps in a thought experiment, each involving a thermodynamic integration, we are able to separate out the binding free energy of a proton to a defect into harmonic and anharmonic, and classical and quantum contributions. We find that about 30% of a typical binding free energy of hydrogen to a lattice defect in iron is accounted for by finite temperature effects, and about half of these arise from quantum proton fluctuations. This has huge implications for the comparison between thermal desorption and permeation experiments and standard electronic structure theory. The implications are even greater for the interpretation of muon spin resonance experiments.},
  author       = {Cheng, Bingqing and Paxton, Anthony T. and Ceriotti, Michele},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  number       = {22},
  publisher    = {American Physical Society},
  title        = {{Hydrogen diffusion and trapping in α-iron: The role of quantum and anharmonic fluctuations}},
  doi          = {10.1103/physrevlett.120.225901},
  volume       = {120},
  year         = {2018},
}

@article{14004,
  abstract     = {High-harmonic spectroscopy driven by circularly polarized laser pulses and their counterrotating second harmonic is a new branch of attosecond science which currently lacks quantitative interpretations. We extend this technique to the midinfrared regime and record detailed high-harmonic spectra of several rare-gas atoms. These results are compared with the solution of the Schrödinger equation in three dimensions and calculations based on the strong-field approximation that incorporate accurate scattering-wave recombination matrix elements. A quantum-orbit analysis of these results provides a transparent interpretation of the measured intensity ratios of symmetry-allowed neighboring harmonics in terms of (i) a set of propensity rules related to the angular momentum of the atomic orbitals, (ii) atom-specific matrix elements related to their electronic structure, and (iii) the interference of the emissions associated with electrons in orbitals corotating or counterrotating with the laser fields. These results provide the foundation for a quantitative understanding of bicircular high-harmonic spectroscopy.},
  author       = {Baykusheva, Denitsa Rangelova and Brennecke, Simon and Lein, Manfred and Wörner, Hans Jakob},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {General Physics and Astronomy},
  number       = {20},
  publisher    = {American Physical Society},
  title        = {{Signatures of electronic structure in bicircular high-harmonic spectroscopy}},
  doi          = {10.1103/physrevlett.119.203201},
  volume       = {119},
  year         = {2017},
}

@article{14031,
  abstract     = {High-harmonic spectroscopy driven by circularly polarized laser pulses and their counterrotating second harmonic is a new branch of attosecond science which currently lacks quantitative interpretations. We extend this technique to the midinfrared regime and record detailed high-harmonic spectra of several rare-gas atoms. These results are compared with the solution of the Schrödinger equation in three dimensions and calculations based on the strong-field approximation that incorporate accurate scattering-wave recombination matrix elements. A quantum-orbit analysis of these results provides a transparent interpretation of the measured intensity ratios of symmetry-allowed neighboring harmonics in terms of (i) a set of propensity rules related to the angular momentum of the atomic orbitals, (ii) atom-specific matrix elements related to their electronic structure, and (iii) the interference of the emissions associated with electrons in orbitals corotating or counterrotating with the laser fields. These results provide the foundation for a quantitative understanding of bicircular high-harmonic spectroscopy.},
  author       = {Baykusheva, Denitsa Rangelova and Brennecke, Simon and Lein, Manfred and Wörner, Hans Jakob},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {General Physics and Astronomy},
  number       = {20},
  publisher    = {American Physical Society},
  title        = {{Signatures of electronic structure in bicircular high-harmonic spectroscopy}},
  doi          = {10.1103/physrevlett.119.203201},
  volume       = {119},
  year         = {2017},
}

@article{6013,
  abstract     = {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.”},
  author       = {Camus, Nicolas and Yakaboylu, Enderalp and Fechner, Lutz and Klaiber, Michael and Laux, Martin and Mi, Yonghao and Hatsagortsyan, Karen Z. and Pfeifer, Thomas and Keitel, Christoph H. and Moshammer, Robert},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  number       = {2},
  publisher    = {American Physical Society},
  title        = {{Experimental evidence for quantum tunneling time}},
  doi          = {10.1103/PhysRevLett.119.023201},
  volume       = {119},
  year         = {2017},
}

@article{14010,
  abstract     = {We report measurements of energy-dependent attosecond photoionization delays between the two outer-most valence shells of N2O and H2O. The combination of single-shot signal referencing with the use of different metal foils to filter the attosecond pulse train enables us to extract delays from congested spectra. Remarkably large delays up to 160 as are observed in N2O, whereas the delays in H2O are all smaller than 50 as in the photon-energy range of 20-40 eV. These results are interpreted by developing a theory of molecular photoionization delays. The long delays measured in N2O are shown to reflect the population of molecular shape resonances that trap the photoelectron for a duration of up to ∼110 as. The unstructured continua of H2O result in much smaller delays at the same photon energies. Our experimental and theoretical methods make the study of molecular attosecond photoionization dynamics accessible.},
  author       = {Huppert, Martin and Jordan, Inga and Baykusheva, Denitsa Rangelova and von Conta, Aaron and Wörner, Hans Jakob},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {General Physics and Astronomy},
  number       = {9},
  publisher    = {American Physical Society},
  title        = {{Attosecond delays in molecular photoionization}},
  doi          = {10.1103/physrevlett.117.093001},
  volume       = {117},
  year         = {2016},
}

@article{14011,
  abstract     = {We introduce bicircular high-harmonic spectroscopy as a new method to probe dynamical symmetries of atoms and molecules and their evolution in time. Our approach is based on combining a circularly polarized femtosecond fundamental field of frequency ω with its counterrotating second harmonic 2ω. We demonstrate the ability of bicircular high-harmonic spectroscopy to characterize the orbital angular momentum symmetry of atomic orbitals. We further show that breaking the threefold rotational symmetry of the generating medium-at the level of either the ensemble or that of a single molecule-results in the emission of the otherwise parity-forbidden frequencies 3qω  (q∈N), which provide a background-free probe of dynamical molecular symmetries.},
  author       = {Baykusheva, Denitsa Rangelova and Ahsan, Md Sabbir and Lin, Nan and Wörner, Hans Jakob},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {General Physics and Astronomy},
  number       = {12},
  publisher    = {American Physical Society},
  title        = {{Bicircular high-harmonic spectroscopy reveals dynamical symmetries of atoms and molecules}},
  doi          = {10.1103/physrevlett.116.123001},
  volume       = {116},
  year         = {2016},
}

@article{7072,
  abstract     = {We investigate the structural and magnetic properties of two molecule-based magnets synthesized from the same starting components. Their different structural motifs promote contrasting exchange pathways and consequently lead to markedly different magnetic ground states. Through examination of their structural and magnetic properties we show that [Cu(pyz)(H2O)(gly)2](ClO4)2 may be considered a quasi-one-dimensional quantum Heisenberg antiferromagnet whereas the related compound [Cu(pyz)(gly)](ClO4), which is formed from dimers of antiferromagnetically interacting Cu2+ spins, remains disordered down to at least 0.03 K in zero field but shows a field-temperature phase diagram reminiscent of that seen in materials showing a Bose-Einstein condensation of magnons.},
  author       = {Lancaster, T. and Goddard, P. A. and Blundell, S. J. and Foronda, F. R. and Ghannadzadeh, S. and Möller, J. S. and Baker, P. J. and Pratt, F. L. and Baines, C. and Huang, L. and Wosnitza, J. and McDonald, R. D. and Modic, Kimberly A and Singleton, J. and Topping, C. V. and Beale, T. A. W. and Xiao, F. and Schlueter, J. A. and Barton, A. M. and Cabrera, R. D. and Carreiro, K. E. and Tran, H. E. and Manson, J. L.},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  number       = {20},
  publisher    = {APS},
  title        = {{Controlling magnetic order and quantum disorder in molecule-based magnets}},
  doi          = {10.1103/physrevlett.112.207201},
  volume       = {112},
  year         = {2014},
}

@article{14020,
  abstract     = {We report the observation of macroscopic field-free orientation, i.e., more than 73% of CO molecules pointing in the same direction. This is achieved through an all-optical scheme operating at high particle densities (>10(17)  cm(-3)) that combines one-color (ω) and two-color (ω+2ω) nonresonant femtosecond laser pulses. We show that the achieved orientation solely relies on the hyperpolarizability interaction as opposed to an ionization-depletion mechanism, thus, opening a wide range of applications. The achieved strong orientation enables us to reveal the molecular-frame anisotropies of the photorecombination amplitudes and phases caused by a shape resonance. The resonance appears as a local maximum in the even-harmonic emission around 28 eV. In contrast, the odd-harmonic emission is suppressed in this spectral region through the combined effects of an asymmetric photorecombination phase and a subcycle Stark effect, generic for polar molecules, that we experimentally identify.},
  author       = {Kraus, P. M. and Baykusheva, Denitsa Rangelova and Wörner, H. J.},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {General Physics and Astronomy},
  number       = {2},
  publisher    = {American Physical Society},
  title        = {{Two-pulse field-free orientation reveals anisotropy of molecular shape resonance}},
  doi          = {10.1103/physrevlett.113.023001},
  volume       = {113},
  year         = {2014},
}

@article{10384,
  abstract     = {Recent studies aimed at investigating artificial analogs of bacterial colonies have shown that low-density suspensions of self-propelled particles confined in two dimensions can assemble into finite aggregates that merge and split, but have a typical size that remains constant (living clusters). In this Letter, we address the problem of the formation of living clusters and crystals of active particles in three dimensions. We study two systems: self-propelled particles interacting via a generic attractive potential and colloids that can move toward each other as a result of active agents (e.g., by molecular motors). In both cases, fluidlike “living” clusters form. We explain this general feature in terms of the balance between active forces and regression to thermodynamic equilibrium. This balance can be quantified in terms of a dimensionless number that allows us to collapse the observed clustering behavior onto a universal curve. We also discuss how active motion affects the kinetics of crystal formation.},
  author       = {Mognetti, B. M. and Šarić, Anđela and Angioletti-Uberti, S. and Cacciuto, A. and Valeriani, C. and Frenkel, D.},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {general physics and astronomy},
  number       = {24},
  publisher    = {American Physical Society},
  title        = {{Living clusters and crystals from low-density suspensions of active colloids}},
  doi          = {10.1103/physrevlett.111.245702},
  volume       = {111},
  year         = {2013},
}

@article{10387,
  abstract     = {We report numerical simulations of membrane tubulation driven by large colloidal particles. Using Monte Carlo simulations we study how the process depends on particle size and binding strength, and present accurate free energy calculations to sort out how tube formation compares with the competing budding process. We find that tube formation is a result of the collective behavior of the particles adhering on the surface, and it occurs for binding strengths that are smaller than those required for budding. We also find that long linear aggregates of particles forming on the membrane surface act as nucleation seeds for tubulation by lowering the free energy barrier associated to the process.},
  author       = {Šarić, Anđela and Cacciuto, Angelo},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {general physics and astronomy},
  number       = {18},
  publisher    = {American Physical Society},
  title        = {{Mechanism of membrane tube formation induced by adhesive nanocomponents}},
  doi          = {10.1103/physrevlett.109.188101},
  volume       = {109},
  year         = {2012},
}

@article{10388,
  abstract     = {Using computer simulations, we show that lipid membranes can mediate linear aggregation of spherical nanoparticles binding to it for a wide range of biologically relevant bending rigidities. This result is in net contrast with the isotropic aggregation of nanoparticles on fluid interfaces or the expected clustering of isotropic insertions in biological membranes. We present a phase diagram indicating where linear aggregation is expected and compute explicitly the free-energy barriers associated with linear and isotropic aggregation. Finally, we provide simple scaling arguments to explain this phenomenology.},
  author       = {Šarić, Anđela and Cacciuto, Angelo},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {general physics and astronomy},
  number       = {11},
  publisher    = {American Physical Society},
  title        = {{Fluid membranes can drive linear aggregation of adsorbed spherical nanoparticles}},
  doi          = {10.1103/physrevlett.108.118101},
  volume       = {108},
  year         = {2012},
}

@article{10391,
  abstract     = {We use numerical simulations to show how a fully flexible filament binding to a deformable cylindrical surface may acquire a macroscopic persistence length and a helical conformation. This is a result of the nontrivial elastic response to deformations of elastic sheets. We find that the filament’s helical pitch is completely determined by the mechanical properties of the surface, and can be easily tuned by varying the surface stretching rigidity. We propose simple scaling arguments to understand the physical mechanism behind this phenomenon and present a phase diagram indicating under what conditions one should expect a fully flexible chain to behave as a helical semiflexible filament. Finally, we discuss the implications of our results.},
  author       = {Šarić, Anđela and Pàmies, Josep C. and Cacciuto, Angelo},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  keywords     = {general physics and astronomy},
  number       = {22},
  publisher    = {American Physical Society},
  title        = {{Effective elasticity of a flexible filament bound to a deformable cylindrical surface}},
  doi          = {10.1103/physrevlett.104.226101},
  volume       = {104},
  year         = {2010},
}