Signature of coherence for strongly dissipative systems

by Mr. Ben Avnit

Physics department, BGU

at Condensed Matter Seminar

Mon, 08 Jul 2024, 11:40
Sacta-Rashi Building for Physics (54), room 207

Abstract

We consider a quantized version of the Sinai-Derrida model for ``random walk in random environment". The model is defined in terms of a Lindblad master equation. For a ring geometry (a chain with periodic boundary condition) it features a delocalization-transition as the bias in increased beyond a critical value, indicating that the relaxation becomes under-damped. Counter intuitively, the effective disorder is enhanced due to coherent hopping. We analyze in detail this enhancement and its dependence on the model parameters. The non-monotonic dependence of the Lindbladian spectrum on the rate of the coherent transitions is highlighted.

Created on 04-07-2024 by Naamneh, Muntaser (mnaamneh)
Updaded on 04-07-2024 by Naamneh, Muntaser (mnaamneh)