Charge and spin current statistics of the open Hubbard model with weak coupling to the environment
Abstract
Based on generalization and extension of previous work [Phys. Rev. Lett. 112, 067201 (2014)] to multiple independent markovian baths we will compute the charge and spin current statistics of the open Hubbard model with weak system-bath coupling up to next-to-leading order in the coupling parameter. The physical results are related to those for the XXZ model in the analogous setup implying a certain universality which potentially holds in this class of nonequilibrium models.
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