Quantum diffusion and thermalization at resonant tunneling
Carlos A. Parra-Murillo, Javier Madro\~nero, and Sandro Wimberger
TL;DR
This paper investigates how a complex quantum system with two energy bands undergoes nonequilibrium dynamics and thermalization through resonant tunneling, using multilevel Landau-Zener crossings to analyze eigenstate delocalization and effective temperature.
Contribution
It introduces a realistic many-body model with two energy bands to study quantum diffusion and thermalization via resonant tunneling and Landau-Zener crossings.
Findings
Eigenstates become delocalized during dynamics
Effective temperature can be defined in the system
Characterization of nonequilibrium behavior through observables
Abstract
Nonequilibrium dynamics and effective thermalization are studied in a resonant tunneling scenario via multilevel Landau-Zener crossings. Our realistic many-body system, composed of two energy bands, naturally allows a separation of degrees of freedom. This gives access to an effective temperature and single- and two-body observables to characterize the delocalization of eigenstates and the nonequilibrium dynamics of our paradigmatic complex quantum system.
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