Canonical Bose gas simulations with stochastic gauges

被引：52

作者：

Drummond, PD ^{[1
]}

Deuar, P ^{[1
]}

Kheruntsyan, KV ^{[1
]}

机构：

[1] Univ Queensland, Dept Phys, ARC Ctr Excellence Quantum Atom Opt, Brisbane, Qld 4072, Australia

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.92.040405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A technique to simulate the grand canonical ensembles of interacting Bose gases is presented. Results are generated for many temperatures by averaging over energy-weighted stochastic paths, each corresponding to a solution of coupled Gross-Pitaevskii equations with phase noise. The stochastic gauge method used relies on an off-diagonal coherent-state expansion, thus taking into account all quantum correlations. As an example, the second-order spatial correlation function and momentum distribution for an interacting 1D Bose gas are calculated.

引用

页数：4

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