Path-integral approach to the thermodynamics of bosons with memory: Density and correlation functions

被引：1
|
作者：
Ichmoukhamedov, T. [1 ]
Tempere, J. [1 ]
机构：
[1] Univ Antwerp, Dept Fys, TQC, Univ Pl 1, B-2610 Antwerp, Belgium
来源：
PHYSICAL REVIEW A | 2021年 / 104卷 / 06期
关键词：
D O I：
10.1103/PhysRevA.104.062201
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Expanding upon previous work, using the path-integral formalism we derive expressions for the one-particle reduced density matrix and the two-point correlation function for a quadratic system of bosons that interact through a general class of memory kernels. The results are applied to study the density, condensate fraction, and pair correlation function of trapped bosons harmonically coupled to external distinguishable masses.
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页数：14
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