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arXiv · 1206.5787

Ab initio methods for finite temperature two-dimensional Bose gases

S. P. Cockburn·N. P. Proukakis
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Abstract

The stochastic Gross-Pitaevskii equation and modified Popov theory are shown to provide an ab initio description of finite temperature, weakly-interacting two-dimensional Bose gas experiments. Using modified Popov theory, a systematic approach is developed in which the momentum cut-off inherent to classical field methods is removed as a free parameter. This is shown to yield excellent agreement with the recent experiment of Hung et al. [Nature, 470, 236 (2011)], verifying that the stochastic Gross-Pitaevskii equation captures the observed universality and scale-invariance.

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S. P. Cockburn, N. P. Proukakis. 2012-06-25. Ab initio methods for finite temperature two-dimensional Bose gases. https://doi.org/10.1103/physreva.86.033610

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