Quantum non-Markovian Langevin equations and transport coefficients

被引：0
|
作者：
V. V. Sargsyan
Z. Kanokov
G. G. Adamian
N. V. Antonenko
机构：
[1] Joint Institute for Nuclear Research,Institute of Nuclear Physics
[2] Uzbek National University,undefined
[3] Uzbek Academy of Sciences,undefined
来源：
Physics of Atomic Nuclei | 2005年 / 68卷
关键词：
Diffusion Coefficient; Correlation Function; Elementary Particle; Asymptotic Behavior; Harmonic Oscillator;
D O I：
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中图分类号：
学科分类号：
摘要：
Quantum diffusion equations featuring explicitly time-dependent transport coefficients are derived from generalized non-Markovian Langevin equations. Generalized fluctuation-dissipation relations and analytic expressions for calculating the friction and diffusion coefficients in nuclear processes are obtained. The asymptotic behavior of the transport coefficients and correlation functions for a damped harmonic oscillator that is linearly coupled in momentum to a heat bath is studied. The coupling to a heat bath in momentum is responsible for the appearance of the diffusion coefficient in coordinate. The problem of regression of correlations in quantum dissipative systems is analyzed.
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页码：2009 / 2021
页数：12
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