Two-time correlation functions in an exactly solvable spin-boson model

被引：0

作者：

V. G. Morozov

G. Roepke

机构：

[1] Moscow State Institute of Radiotechnics,Institut für Physik

[2] Electronics,undefined

[3] and Automation (Technical University),undefined

[4] Universität Rostock,undefined

来源：

Theoretical and Mathematical Physics | 2011年 / 168卷

关键词：

open quantum system; dephasing in quantum systems; spin-boson model;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We consider a spin-boson model describing the dephasing process in an open quantum system and obtain exact expressions for the two-time spin correlation function and the decoherence function applicable for any values of the coupling constants. We show that the initial statistical correlations between the dynamical system and the heat bath considerably affect the time dependence of the decoherence function.

引用

页码：1271 / 1277

页数：6

共 13 条

[1]

Bogolyubov N. N.(1959)undefined Sov. Phys. Dokl. 4 589-593

[2]

Tyablikov S. V.(1987)undefined Rev. Modern Phys. 59 1-85

[3]

Leggett A. J.(2005)undefined Phys. Usp. 48 1-36

[4]

Chakravarty S.(1995)undefined Phys. Rev. A 51 992-997

[5]

Dorsey A. T.(1996)undefined Proc. Roy. Soc. London A 452 567-584

[6]

Fisher M. P. A.(undefined)undefined undefined undefined undefined-undefined

[7]

Garg A.(undefined)undefined undefined undefined undefined-undefined

[8]

Zwerger W.(undefined)undefined undefined undefined undefined-undefined

[9]

Valiev K. A.(undefined)undefined undefined undefined undefined-undefined

[10]

Unruh W. G.(undefined)undefined undefined undefined undefined-undefined

← 1 2 →