Spin dynamics of quantum and classical Heisenberg dimers

被引：24

作者：

Mentrup, D

Schnack, J

Luban, M

机构：

[1] Univ Osnabruck, Fachbereich Phys, D-49069 Osnabruck, Germany

[2] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

[3] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

来源：

PHYSICA A | 1999年 / 272卷 / 1-2期

关键词：

classical statistics; quantum statistics; canonical ensemble; Heisenberg model; spin dimer;

D O I：

10.1016/S0378-4371(99)00239-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Analytical solutions for the time-dependent autocorrelation function of the classical and quantum mechanical spin dimer with arbitrary spin are presented and compared. For large spin quantum numbers or high temperature the classical and the quantum dimer become more and more similar, yet with the major difference that the quantum autocorrelation function is periodic in time whereas the classical is not. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：153 / 161

页数：9

共 20 条

[1]

Balcar E., 1989, Theory of Magnetic Neutron and Photon Scattering

[2]

CIFTJA O, 1999, UNPUB PHYS REV B

[3]

CONDON EU, 1964, THEORY ATOMIC SPECTR, P59

[4] Dynamic correlations of antiferromagnetic spin-1/2 XXZ chains at arbitrary temperature from complete diagonalization [J].