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

被引：113

作者：

Arrigoni, Enrico ^{[1
]}

Knap, Michael ^{[1
]}

von der Linden, Wolfgang ^{[1
]}

机构：

[1] Graz Univ Technol, Inst Theoret & Computat Phys, A-8010 Graz, Austria

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 08期

基金：

奥地利科学基金会;

关键词：

RENORMALIZATION-GROUP; SYSTEMS; TRANSPORT; DIMENSIONS; LIGHT; ATOMS;

D O I：

10.1103/PhysRevLett.110.086403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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. DOI: 10.1103/PhysRevLett.110.086403

引用

页数：6

共 66 条

[1] Real-time dynamics in quantum-impurity systems: A time-dependent numerical renormalization-group approach [J].