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arXiv 1504.03070quant-ph
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用重整化群方法推导马尔可夫主方程

Derivation of Markovian master equation by renormalization group method

Yasusada Nambu, Shingo Kukita

摘要:

本文用重整化群方法导出了马尔可夫主方程。从von Neumann方程的一个简单微扰解出发,在浴场关联时间较短的假设下,得到了具有粗粒度时间步长的约化密度矩阵。然后利用重整化群方法,证明了在弱耦合极限下,可以消除特定初始时刻对微扰解的依赖性,得到了Gorini-Kossakowski-Lindblad-Sudarshan(GKLS)形式的马尔可夫半群主方程.

英文摘要:

We present a derivation of the Markovian master equation by the renormalization group method. Starting from a naive perturbative solution of the von Neumann equation, the reduced density matrix with the coarse grained time steps is obtained using the assumption of short correlation time of the bath field. Then by applying the renormalization group method, we show that the dependence of the specific initial time on the perturbative solution can be removed and the Markovian semigroup master equation in the Gorini--Kossakowski--Lindblad--Sudarshan (GKLS) form is obtained in the weak coupling limit.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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