English

Nonequilibrium transport through an interacting monitored quantum dot

Mesoscale and Nanoscale Physics 2026-02-25 v3 Strongly Correlated Electrons

Abstract

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.

Keywords

Cite

@article{arxiv.2507.20779,
  title  = {Nonequilibrium transport through an interacting monitored quantum dot},
  author = {Daniel Werner and Matthieu Vanhoecke and Marco Schirò and Enrico Arrigoni},
  journal= {arXiv preprint arXiv:2507.20779},
  year   = {2026}
}

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R2 v1 2026-07-01T04:22:00.967Z