Van Damme, M., Desaules, J.-Y. orcid.org/0000-0002-3749-6375, Papić, Z. orcid.org/0000-0002-8451-2235 et al. (1 more author) (Cover date: August - October 2023) Anatomy of dynamical quantum phase transitions. Physical Review Research, 5 (3). 033090. ISSN 2643-1564
Abstract
Global quenches of quantum many-body models can give rise to periodic dynamical quantum phase transitions (DQPTs) directly connected to the zeros of a Landau order parameter (OP). The associated dynamics has been argued to bear a close resemblance to Rabi oscillations characteristic of two-level systems. Here, we address the question of whether this DQPT behavior is merely a manifestation of the limit of an effective two-level system or if it can arise as part of a more complex dynamics. We focus on quantum many-body scarring as a useful toy model allowing us to naturally study state transfer in an otherwise chaotic system. We find that a DQPT signals a change in the dominant contribution to the wave function in the degenerate initial-state manifold, with a direct relation to an OP zero only in the special case of occurring at the midpoint of an evenly degenerate manifold. Our work generalizes previous results and reveals that, in general, periodic DQPTs comprise complex many-body dynamics fundamentally beyond that of two-level systems.
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Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This article is protected by copyright, Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Theoretical Physics (Leeds) |
Funding Information: | Funder Grant number Leverhulme Trust RL-2019-015 |
Depositing User: | Symplectic Publications |
Date Deposited: | 04 Sep 2023 12:16 |
Last Modified: | 04 Sep 2023 12:16 |
Published Version: | https://doi.org/10.1103/PhysRevResearch.5.033090 |
Status: | Published |
Publisher: | American Physical Society (APS) |
Identification Number: | 10.1103/physrevresearch.5.033090 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:202957 |
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