Kadanoff-Baym方程的Langevin诠释
高能物理 - 唯象学
2017-08-23 v1
摘要
我们证明了非微扰量子输运方程,即“Kadanoff-Baym方程”,可以理解为Langevin型随机方程的系综平均。为此,我们将一个自由标量玻色子量子场与一个具有给定温度T的环境热浴耦合。由涨落-耗散定理保证的噪声和耗散的固有存在,确保了在长时间极限下,模式或粒子平均上被热布居。这种诠释导致了对热化过程以及Kadanoff-Baym方程诠释的更直观的物理图像。
关键词
引用
@article{arxiv.hep-ph/9912229,
title = {Langevin Interpretation of Kadanoff-Baym Equations},
author = {C. Greiner and S. Leupold},
journal= {arXiv preprint arXiv:hep-ph/9912229},
year = {2017}
}
备注
Talk presented at the Workshop on `Kadanoff-Baym Equations: Progress and Perspectives for Many-Body-Physics', 20-24. September 1999, Rostock, Germany; 9 pages LATEX, 1 .ps fig., sprocl.sty