FUNCTIONAL-INTEGRATION FOR QUANTUM MAGNETS - NEW METHOD AND NEW RESULTS

被引：28

作者：

KOLOKOLOV, IV

机构：

[1] Institute of Nuclear Physics

来源：

ANNALS OF PHYSICS | 1990年 / 202卷 / 01期

关键词：

D O I：

10.1016/0003-4916(90)90343-M

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The representation of the generating functional for quantum Heisenberg ferromagnets as an integral over two uncostrained c-number valued fields, charged and neutral, obeying the initial conditions (instead of commonly used periodic boundary conditions) is obtained. With the help of this representation the long-time dynamics of the longitudinal spin component at low temperatures is studied. The infrared-singular part of effective action is calculated for the longitudinal fluctuations in 3D-quantum antiferromagnets as well. © 1990.

引用

页码：165 / 185

页数：21

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