System-size dependence of statistical behavior in quantum system

被引：25

作者：

Saito, K

Takesue, S

Miyashita, S

机构：

[1] KYOTO UNIV, GRAD SCH HUMAN & ENVIRONM STUDIES, KYOTO 60601, JAPAN

[2] KYOTO UNIV, FAC INTEGRATED HUMAN STUDIES, KYOTO 60601, JAPAN

[3] OSAKA UNIV, FAC SCI, DEPT EARTH & SPACE SCI, TOYONAKA, OSAKA 560, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1996年 / 65卷 / 05期

关键词：

quantum spin system; quantum mechanical motion; statistical mechanical properties; ergodicity; the canonical distribution; few degrees of freedom;

D O I：

10.1143/JPSJ.65.1243

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss in detail statistical mechanical properties of quantum dynamics with the use of numerical simulations of isolated one-dimensional spin systems of various sizes. With respect to the energy distribution in a subsystem, a good agreement is observed between those obtained by the method of statistical mechanics and via long-time average over simulation, even in the system composed of a small number of spins. In particular, the distribution of energy forms the canonical distribution.

引用

页码：1243 / 1249

页数：7

共 5 条

[1] STATISTICAL BEHAVIOR IN DETERMINISTIC QUANTUM-SYSTEMS WITH FEW DEGREES OF FREEDOM [J].