Theory of spin relaxation in a quantum environment: strongly coupled spin-boson system

被引：7
|
作者：
Uchiyama, C
Shibata, F
机构：
[1] Yamanashi Univ, Fac Engn, Dept Elect Engn, Kofu, Yamanashi 400, Japan
[2] Ochanomizu Univ, Fac Sci, Dept Phys, Bunkyo Ku, Taipei 112, Taiwan
来源：
PHYSICS LETTERS A | 2000年 / 267卷 / 01期
关键词：
quantum decoherence; spin relaxation; spin-boson system; continued fraction;
D O I：
10.1016/S0375-9601(00)00064-5
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We formulate a quantum statistical mechanical theory of relaxation for a spin 1/2 system interacting with a quantum environment. Our theory has the advantage compared to previous ones in simultaneously treating both (i) arbitrary modulation speed (and/or any strength of modulation) of the fluctuating field and (ii) any temperature region of the environment. (C) 2000 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码：7 / 17
页数：11
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