非平衡非线性开放量子系统 I. 弱非谐振子的泛函微扰分析
高能物理 - 理论
2020-07-01 v2 量子物理
摘要
我们引入一种泛函微扰方法，用于处理与量子场热库耦合的弱非线性系统。我们演示利用该方法获得与热库相互作用的量子非谐振子的协方差矩阵元与关联函数。基于该非线性开放量子系统的非平衡动力学，我们辨识出一个涨落-耗散关系。为建立其与动力学平衡化的联系，我们进一步考察了非谐振子与热库场之间的能量流。净流的消失{表明}此类开放系统构型存在平衡态。本文结果有助于研究非线性量子系统(如热传导或电子输运)的非平衡物理过程。
引用
@article{arxiv.1912.12803,
title = {Nonequilibrium Nonlinear Open Quantum Systems I. Functional Perturbative Analysis of a Weakly Anharmonic Oscillator},
author = {Jen-Tsung Hsiang and B. L. Hu},
journal= {arXiv preprint arXiv:1912.12803},
year = {2020}
}
备注
Version 1 is based on the research notes written in August 2014, which contain unpublished original research results. We have reorganized the raw materials with minor revisions in wording for improved readability. Version 2 is the published version