Evidence for Unbounded Growth of the Number Entropy in Many-Body Localized Phases

Kiefer-Emmanouilidis M, Unanyan R, Fleischhauer M, Sirker J (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Physical Review Letters American Physical Society

Book Volume: 124

Article Number: 243601

Journal Issue: 24

DOI: 10.1103/PhysRevLett.124.243601

Abstract

We investigate the number entropy SN-which characterizes particle-number fluctuations between subsystems-following a quench in one-dimensional interacting many-body systems with potential disorder. We find evidence that in the regime which is expected to show many-body localization and where the entanglement entropy grows as S∼lnt as function of time t, the number entropy grows as SN∼lnlnt, indicating continuing subdiffusive particle transport at a very slow rate. We demonstrate that this growth is consistent with a relation between entanglement and number entropy recently established for noninteracting systems.

Involved external institutions

Technische Universität Kaiserslautern DE Germany (DE) University of Manitoba CA Canada (CA)

How to cite

APA:

Kiefer-Emmanouilidis, M., Unanyan, R., Fleischhauer, M., & Sirker, J. (2020). Evidence for Unbounded Growth of the Number Entropy in Many-Body Localized Phases. Physical Review Letters, 124(24). https://doi.org/10.1103/PhysRevLett.124.243601

MLA:

Kiefer-Emmanouilidis, Maximilian, et al. "Evidence for Unbounded Growth of the Number Entropy in Many-Body Localized Phases." Physical Review Letters 124.24 (2020).

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