Crossover in the dynamical critical exponent of a quenched two-dimensional Bose gas
Crossover in the dynamical critical exponent of a quenched two-dimensional Bose gas
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淬火二维玻色气体的动力学临界指数的交叉
DOI:
10.1103/physrevresearch.3.013212
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发表时间:
2021
影响因子:
4.2
通讯作者:
Groszek A
中科院分区:
文献类型:
--
作者:
Groszek A
We study the phase-ordering dynamics of a uniform Bose gas in two dimensions following a quench into the ordered phase. We explore the crossover between dissipative and conservative evolution by performing numerical simulations within the classical field methodology. Regardless of the dissipation strength, we find clear evidence for universal scaling, with dynamical critical exponentcharacterizing the growth of the correlation length. In the dissipative limit we find growth consistent with the logarithmically corrected law, and exponent, in agreement with previous studies. Decreasing the dissipation towards the conservative limit, we find strong numerical evidence for the expected growth law. However, we observe a smooth crossover inthat converges to an anomalous value distinctly lower than 2 at a small finite dissipation strength. We show that this lower exponent may be attributable to a power-law vortex mobility arising from vortex-sound interactions.
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DOI:
10.1103/physrevb.103.045302
发表时间:
2020
期刊:
arXiv: Quantum Gases
影响因子:
--
作者:
Quanyu Mei;K. Ji;M. Wouters
通讯作者:
M. Wouters
影响因子:
8.6
作者:
H. Chu;G. Williams
通讯作者:
G. Williams
影响因子:
4.6
作者:
J. Weiss;J. McWilliams
通讯作者:
J. Weiss;J. McWilliams
影响因子:
64.8
作者:
Maximilian Prüfer;Philipp Kunkel;H. Strobel;S. Lannig;D. Linnemann;Christian-Marcel Schmied;J. Berges;T. Gasenzer;M. Oberthaler
通讯作者:
Maximilian Prüfer;Philipp Kunkel;H. Strobel;S. Lannig;D. Linnemann;Christian-Marcel Schmied;J. Berges;T. Gasenzer;M. Oberthaler
DOI:
10.1088/0953-4075/36/23/010
发表时间:
2003-12-14
影响因子:
1.6
作者:
Gardiner, CW;Davis, MJ
通讯作者:
Davis, MJ