量子纠缠
连贯性(哲学赌博策略)
统计物理学
物理
极限(数学)
玻色子
现象学(哲学)
主方程
联轴节(管道)
马尔可夫过程
时间演化
量子力学
量子
数学
数学分析
统计
机械工程
哲学
认识论
工程类
出处
期刊:Physical review
日期:2017-04-06
卷期号:95 (4)
被引量:39
标识
DOI:10.1103/physreva.95.042104
摘要
We study the properties of a refined weak-coupling limit that preserves complete positivity in order to describe non-Markovian dynamics in the spin-boson model. With this tool, we show the system presents a rich non-Markovian phenomenology. This implies a dynamical difference between entanglement and coherence: the latter undergoes revivals, whereas the former not, despite the induced dynamics being fully incoherent. In addition, the evolution presents ``quasieternal'' non-Markovianity, becoming nondivisible at any time period where the system evolves qualitatively. Furthermore, the method allows for an exact derivation of a master equation that accounts for a reversible energy exchange between system and environment. Specifically, this is obtained in the form of a time-dependent Lamb shift term.
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