# Quench dynamics of an ultracold two-dimensional Bose gas

Source: [Quench dynamics of an ultracold two-dimensional Bose gas](<https://www.sota2.com/research/paper/68fa3aba1e209131ce8cd00b>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T00:13:52.143Z

Authors: Paolo Comaron, Fabrizio Larcher, Franco Dalfovo, Nikolaos P. Proukakis

Published: 2019-05-13T19:44:08.000Z

## Abstract

We study the dynamics of a two-dimensional Bose gas after an instantaneous quench of an initially ultracold thermal atomic gas across the Berezinskii-Kosterlitz-Thouless phase transition, confirming via stochastic simulations that the system undergoes phase ordering kinetics and fulfills dynamical scaling hypothesis at late-time dynamics. Specifically, we find in that regime the vortex number decaying in time as $\\langle N\_v \\propto t^{-1}\\rangle$, consistent with a dynamical critical exponent $z \\approx 2$ for both temperature and interaction quenches. Focusing on finite-size box-like geometries, we demonstrate that such an observation is within current experimental reach.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1905.05263>)

[PDF](<https://arxiv.org/pdf/1905.05263.pdf>)