Nonequilibrium Dynamical Mean-Field Theory: An Auxiliary Quantum Master Equation Approach

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Abstract

We introduce a versatile method to compute electronic steady-state properties of strongly correlated extended quantum systems out of equilibrium. The approach is based on dynamical mean-field theory (DMFT), in which the original system is mapped onto an auxiliary nonequilibrium impurity problem imbedded in a Markovian environment. The steady-state Green’s function of the auxiliary system is solved by full diagonalization of the corresponding Lindblad equation. The approach can be regarded as the nontrivial extension of the exact-diagonalization-based DMFT to the nonequilibrium case. As a first application, we consider an interacting Hubbard layer attached to two metallic leads and present results for the steady-state current and the nonequilibrium density of states.
Original languageEnglish
Pages (from-to)086403
Number of pages1
JournalPhysical Review Letters
Volume110
Issue number8
DOIs
Publication statusPublished - 1 Feb 2013

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Green's functions
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Nonequilibrium Dynamical Mean-Field Theory: An Auxiliary Quantum Master Equation Approach. / Arrigoni, Enrico; Knap, Michael; von der Linden, Wolfgang.

In: Physical Review Letters, Vol. 110, No. 8, 01.02.2013, p. 086403.

Research output: Contribution to journalArticleResearchpeer-review

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