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arXiv · 2207.00864

Heat Current in Non-Markovian Open Systems

Ruofan Chen
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Abstract

We generalize time-evolving matrix product operators method to nonequilibrium quantum transport problems. The nonequilibrium current is obtained via numerical differentiation of the generating functional which is represented as a tensor network. The approach is numerically exact and the non-Markovian effects are fully taken into account. In the transport process, a part of the heat that flows out from a bath flows into the system and other baths, and the rest is stored in the system-bath coupling part. We take the spin-boson model as a demonstration to show the details of this heat flowing and the establishment of a steady current between two baths.

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Ruofan Chen. 2022-07-02. Heat Current in Non-Markovian Open Systems. https://doi.org/10.1088/1367-2630/acc60a

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