A DESCRIPTION OF COLLECTIVE DEGREE OF FREEDOM AS A DYNAMIC VARIABLE .3. HYDRODYNAMICAL VARIABLES IN THE SCHRODINGER FIELD

被引：0

作者：

TAKAHASHI, Y

机构：

[1] Theoretical Physics Institute, University of Alberta, Edmonton

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 1990年 / 167卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0378-4371(90)90125-C

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The method of extricated redundant variable is now applied to the Schrödinger field. The longitudinal collective mode is separated as an extricated redundant variable in such a manner that the Galilei invariance is satisfied. It is shown that the longitudinal mode satisfies a Galilei invariant non-linear equation which reduces to the usual phonon equation in linear approximation. The total system consisting of the longitudinal and the individual modes is expressed in terms of hydrogynamical variables to obtain the two-fluid model. The canonical formalism is introduced. © 1990.

引用

页码：417 / 432

页数：16

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