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arXiv 1909.08658cond-mat.mes-hallphysics.comp-phquant-ph
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开放费米子系统非马尔可夫动力学的马尔可夫处理

Markovian Treatment of non-Markovian Dynamics of Open Fermionic Systems

Feng Chen, Enrico Arrigoni, Michael Galperin

摘要:

我们证明了一个耦合到具有幺正系统-环境演化的连续环境的开放费米子系统可以精确地映射到一个由物理费米子系统和一组经历非幺正Lindblad型系统-模演化的离散费米子模组成的辅助系统上,使得两种情况下费米子系统的约化动力学相同.在两个系统的约化动力学的等价性的条件被确定和证明。本文的研究是近年来玻色系统研究的推广[D. Tamascelli,A. Smirne,S. F. Huelga和M. B. Plenio,Phys. Rev. Lett. 120,030402(2018)],以开放量子费米系统和多时间关联函数。通用结模型内的数值模拟进行说明。

英文摘要:

We show that an open fermionic system coupled to continuous environment with unitary system-environment evolution can be exactly mapped onto an auxiliary system consisting of the physical fermion system and a set of discrete fermionic modes subject to non-unitary Lindblad-type system-modes evolution in such a way that reduced dynamics of the fermionic system in the two cases are the same. Conditions for equivalence of reduced dynamics in the two systems are identified and a proof is presented. The study is extension of recent work on Bose systems [D. Tamascelli, A. Smirne, S. F. Huelga, and M. B. Plenio, Phys. Rev. Lett. 120, 030402 (2018)] to open quantum Fermi systems and to multi-time correlation functions. Numerical simulations within generic junction model are presented for illustration.

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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