HELICITY MODULUS AT LOW-TEMPERATURES

被引：11

作者：

BANAVAR, JR

JASNOW, D

机构：

[1] Dept. of Phys. and Astron., Univ. of Pittsburgh, Pittsburgh, PA

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1978年 / 11卷 / 07期

关键词：

D O I：

10.1088/0305-4470/11/7/024

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The helicity modulus (superfluid density) is evaluated for spin systems in the magnon regime and for an interacting Bose fluid in the Bogoliubov approximation. The quantal XY model and the Bose system each yield the same temperature dependence for the helicity modulus; the behaviour is distinct from that of the square of the order parameter.

引用

页码：1361 / 1368

页数：8

共 14 条

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