Universal scaling of the dynamic BKT transition in quenched 2D Bose gases

S Sunami, VP Singh, D Garrick, A Beregi, AJ Barker… - Science, 2023 - science.org
The understanding of nonequilibrium dynamics in many-body quantum systems is a
fundamental issue in statistical physics. Experiments that probe universal properties of these …

Universality of Bose-Einstein Condensation and Quenched Formation Dynamics

NP Proukakis - arXiv preprint arXiv:2304.09541, 2023 - arxiv.org
The emergence of macroscopic coherence in a many-body quantum system is a ubiquitous
phenomenon across different physical systems and scales. This Chapter reviews key …

Self-Consistent Stochastic Finite-Temperature Modelling: Ultracold Bose Gases with Local (s-wave) and Long-Range (Dipolar) Interactions

NP Proukakis, G Rigopoulos, A Soto - arXiv preprint arXiv:2407.20178, 2024 - arxiv.org
We formulate a generalized self-consistent quantum kinetic theory including thermal
fluctuations and stochastic contributions for modelling ultracold Bose gases interacting via a …

Comparison of the microcanonical population annealing algorithm with the Wang-Landau algorithm

V Mozolenko, M Fadeeva, L Shchur - Physical Review E, 2024 - APS
The development of new algorithms for simulations in physics is as important as the
development of new analytical methods. In this paper, we present a comparison of the …

Universal Coarsening in a Homogeneous Two-Dimensional Bose Gas

M Gazo, A Karailiev, T Satoor, C Eigen, M Gałka… - arXiv preprint arXiv …, 2023 - arxiv.org
Coarsening of an isolated far-from-equilibrium quantum system is a paradigmatic many-
body phenomenon, relevant from subnuclear to cosmological lengthscales, and predicted to …

Damped point-vortex model for polar-core spin vortices in a ferromagnetic spin-1 Bose-Einstein condensate

LA Williamson, PB Blakie - Physical Review Research, 2021 - APS
Ferromagnetic spin-1 Bose-Einstein condensates in the broken-axisymmetric phase support
polar-core spin vortices (PCVs), which are intimately linked to the nonequilibrium dynamics …

Fluctuation theorem anomaly in a point-vortex fluid

R Sharma, TP Simula, AJ Groszek - Physical Review A, 2024 - APS
The second law of thermodynamics posits that in closed macroscopic systems the rate of
entropy production must be positive. However, small systems can exhibit negative entropy …

Quantum impurities in finite-temperature Bose gases: Detecting vortex proliferation across the BKT and BEC transitions

P Comaron, N Goldman, A Imamoglu… - arXiv preprint arXiv …, 2024 - arxiv.org
Detecting vortices in neutral superfluids represents an outstanding experimental challenge.
Using stochastic classical-field methods, we theoretically show that a quantum impurity …

A universal speed limit for spreading of quantum coherence

G Martirosyan, M Gazo, J Etrych, SM Fischer… - arXiv preprint arXiv …, 2024 - arxiv.org
Discoveries of fundamental limits for the rates of physical processes, from the speed of light
to the Lieb-Robinson bound for information propagation, are conceptual breakthroughs that …

Non-equilibrium Dynamics of Vortices in Two-Dimensional Quantum Gases: Determining the Dynamical Scaling Region Using the Mahalanobis Distance

RJ Tattersall, AW Baggaley, TP Billam - Journal of Low Temperature …, 2024 - Springer
When a system undergoes a rapid quench from a disordered to an ordered phase, it does
not order instantly but instead relaxes towards equilibrium over time. During this relaxation …