Precision Monte Carlo test of the Hartree-Fock approximation for a trapped Bose gas

被引：67

作者：

Holzmann, M

Krauth, W

Naraschewski, M

机构：

[1] Ecole Normale Super, CNRS, Lab Phys Stat, F-75231 Paris 05, France

[2] Ecole Normale Super, Lab Kastler Brossel, F-75231 Paris 05, France

[3] Harvard Univ, Dept Phys, Jefferson Lab, Cambridge, MA 02138 USA

[4] Harvard Univ, Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW A | 1999年 / 59卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.59.2956

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We compare the semiclassical Hartree-Fock approximation for a trapped Bose gas to a direct path-integral quantum Monte Carlo simulation. The chosen parameters correspond to current Rb-87 experiments. We observe corrections to the mean-field density profile: the path-integral calculation reveals an increase of the number of condensed particles, which is of the same order as a previously computed result for a homogeneous system. We discuss the experimental observability of the effect and propose a method to analyze data of in situ experiments. [S1050-2947(99)02404-X].

引用

页码：2956 / 2961

页数：6

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