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Nonequilibrium transport through an interacting monitored quantum dot

Nonequilibrium transport through an interacting monitored quantum dot

来源:Arxiv_logoArxiv
英文摘要

We study the interplay between strong correlations and Markovian dephasing, resulting from monitoring the charge or spin degrees of freedom of a quantum dot described by a dissipative Anderson impurity model. Using the Auxiliary master equation approach we compute the steady-state spectral function and occupation of the dot and discuss the role of dephasing on Kondo physics. Furthermore, we consider a two-lead setup which allows to compute the steady-state current and conductance. We show that the Kondo steady-state is robust to moderate charge dephasing but not to spin dephasing, which we interpret in terms of dephasing-induced heating of low-energy excitations. Finally, we show universal scaling collapse of the non-linear conductance with a dephasing-dependent Kondo scale.

Daniel Werner、Matthieu Vanhoecke、Marco Schirò、Enrico Arrigoni

物理学

Daniel Werner,Matthieu Vanhoecke,Marco Schirò,Enrico Arrigoni.Nonequilibrium transport through an interacting monitored quantum dot[EB/OL].(2025-08-01)[2025-08-18].https://arxiv.org/abs/2507.20779.点此复制

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