A quantum analogue of the Jarzynski equality

被引：79

作者：

Yukawa, S ^{[1
]}

机构：

[1] Univ Tokyo, Sch Engn, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2000年 / 69卷 / 08期

关键词：

quantum nonequilibrium dynamics; Jarzynski equality;

D O I：

10.1143/JPSJ.69.2367

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A quantum analogue of the Jarzynski equality is constructed. This equality connects an ensemble average of exponentiated work with the Helmholtz free-energy difference in a nonequilibrium switching process subject to a thermal heat bath. To confirm its validity in a practical situation, we also investigate an open quantum system that is a spin 1/2 system with a scanning magnetic field interacting with a thermal heat bath. As a result: we find that the quantum analogue functions well.

引用

页码：2367 / 2370

页数：4

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