COHERENT STATES IN THEORY OF SUPERFLUIDITY .2. FLUCTUATIONS AND IRREVERSIBLE PROCESSES

被引：33

作者：

LANGER, JS

机构：

[1] Department of Physics, Carnegie-Mellon University, Pittsburgh

来源：

PHYSICAL REVIEW | 1969年 / 184卷 / 01期

关键词：

D O I：

10.1103/PhysRev.184.219

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The coherent-state formalism is used to develop a theory of fluctuations and irreversible processes in a superfluid Bose system. Equations of motion for the density matrix are derived both for the case of an isolated system and for the system in interaction with a heat bath. The formalism allows one to go easily to the classical limit and thus to obtain equations for the probability distribution of the superfluid order parameter. The results are in a form suitable for the calculation of the decay of superflow near the λ point and other similar phenomena. © 1969 The American Physical Society.

引用

页码：219 / &

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