QUANTUM MASTER EQUATION OF A PARTICLE IN A GAS ENVIRONMENT

被引：86
作者：
DIOSI, L
机构：
[1] KFKI Research Institute for Particle and Nuclear Physics, H-1525
来源：
EUROPHYSICS LETTERS | 1995年 / 30卷 / 02期
关键词：
D O I：
10.1209/0295-5075/30/2/001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The reduced dynamics of a Brownian particle is discussed in single collision approach valid typically in dilute-gas environments. Our main purpose is a consistent account of quantum friction caused by local environmental interactions. We derive a Lindblad master equation whose generators are calculated from the differential cross-section of single collisions between the Brownian and the gas particles, respectively. The existence of thermal equilibrium for the Brownian particle's state rho is proved. Master equations proposed earlier are shown to be particular cases of our one.
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页码：63 / 68
页数：6
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