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Nonequilibrium Transport in Quantum Impurity Models (Bethe-Ansatz for open systems)

Pankaj Mehta·Natan Andrei
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Abstract

We develop an exact non-perturbative framework to compute steady-state properties of quantum-impurities subject to a finite bias. We show that the steady-state physics of these systems is captured by nonequilibrium scattering eigenstates which satisfy an appropriate Lippman-Schwinger equation. Introducing a generalization of the equilibrium Bethe-Ansatz - the Nonequilibrium Bethe-Ansatz (NEBA), we explicitly construct the scattering eigenstates for the Interacting Resonance Level model and derive exact, nonperturbative results for the steady-state properties of the system.

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Pankaj Mehta, Natan Andrei. 2005-12-02. Nonequilibrium Transport in Quantum Impurity Models (Bethe-Ansatz for open systems). https://doi.org/10.1103/physrevlett.96.216802

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