Canonical Bose gas simulations with stochastic gauges

Preprint

26 February 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0308219

Abstract

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.

Keywords

CANONICAL ENSEMBLES
SPATIAL CORRELATION
STOCHASTIC GAUGE
GRAND CANONICAL
GAS SIMULATIONS
CANONICAL BOSE
PHASE NOISE
BOSE GAS

All Related Versions

Version 1, 2003-08-12, ArXiv
Version 2, 2004-02-26, ArXiv
Published version: Physical Review Letters, 92 (4), 040405.

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