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Exponentially long lifetime of universal quasi-steady states in topological Floquet pumps

by Tobias Gulden, Erez Berg, Mark S. Rudner, Netanel H. Lindner

Submission summary

As Contributors: Tobias Gulden
Arxiv Link: https://arxiv.org/abs/1901.08385v2
Date submitted: 2019-11-22
Submitted by: Gulden, Tobias
Submitted to: SciPost Physics
Discipline: Physics
Subject area: Quantum Physics
Approach: Theoretical

Abstract

We investigate a mechanism to transiently stabilize topological phenomena in long-lived quasi-steady states of isolated quantum many-body systems driven at low frequencies. We obtain an analytical bound for the lifetime of the quasi-steady states which is exponentially large in the inverse driving frequency. Within this lifetime, the quasi-steady state is characterized by maximum entropy subject to the constraint of fixed number of particles in the system's Floquet-Bloch bands. In such a state, all the non-universal properties of these bands are washed out, hence only the topological properties persist.

Current status:
Editor-in-charge assigned


Submission & Refereeing History

Submission 1901.08385v2 on 22 November 2019

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