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Einstein Relation for a Driven Disordered Quantum Chain in Subdiffusive Regime by Mierzejewski, M.; Prelovsek, P.; Bonca, J. is a scholarly article available to read on EtoBox.

What is Einstein Relation for a Driven Disordered Quantum Chain in Subdiffusive Regime about?

A quantum particle propagates subdiffusively on a strongly disordered chain when it is coupled to itinerant hard-core bosons. We establish a generalized Einstein relation (GER) that relates such subdiffusive spread to an unusual time-dependent drift velocity, which appears as a consequence of a constant electric field. We show that GER remains valid much beyond the regime of the linear response. Qualitatively, it holds true up to strongest drivings when the nonlinear field-effects lead to the Stark-like localization. Numerical calculations based on full quantum evolution are substantiated by much simpler rate equations for the boson-assisted transitions between localized Anderson states.

Author

Mierzejewski, M.; Prelovsek, P.; Bonca, J.

Published

2019

Language

EN