Prominent quantum many-body scars in a truncated Schwinger model

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dc.citation.issue20
dc.citation.rankM21
dc.citation.spage205112
dc.citation.volume107
dc.contributor.authorDesaules, Jean-Yves
dc.contributor.authorHudomal, Ana
dc.contributor.authorBanerjee, Debasish
dc.contributor.authorSen, Arnab
dc.contributor.authorPapić, Zlatko
dc.contributor.authorHalimeh, Jad C.
dc.date.accessioned2023-05-11T09:00:05Z
dc.date.available2023-05-11T09:00:05Z
dc.date.issued2023-05-05
dc.description.abstractThe high level of control and precision achievable in current synthetic quantum matter setups has enabled first attempts at quantum-simulating various intriguing phenomena in condensed matter physics, including those probing thermalization or its absence in closed quantum systems. In the companion Letter to this article [J.-Y.Desaules et al., Phys. Rev. B 107, L201105 (2023)], we have shown that quantum many-body scars, special low entropy eigenstates that weakly break ergodicity in nonintegrable systems, arise in spin-S quantum link models that converge to (1 + 1)-dimensional lattice quantum electrodynamics (Schwinger model) in the Kogut-Susskindlimit S → ∞. In this work, we further demonstrate that quantum many-body scars exist in a truncated version of the Schwinger model, and are qualitatively more prominent than their counterparts in spin-S quantum link models. We illustrate this by, among other things, performing a finite-S scaling analysis that strongly suggests that scarring persists in the truncated Schwinger model in the limit S → ∞. Although it does not asymptotically converge to the Schwinger model, the truncated formulation is relevant to synthetic quantum matter experiments, and also provides fundamental insight into the nature of quantum many-body scars, their connection to lattice gauge theories, and the thermalization dynamics of the latter. Our conclusions can be readily tested in current cold-atom setups.
dc.identifier.doi10.1103/physrevb.107.205112
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.urihttps://pub.ipb.ac.rs/handle/123456789/20
dc.language.isoen
dc.publisherAmerican Physical Society (APS)
dc.relation.ispartofPhysical Review B
dc.relation.ispartofabbrPhys. Rev. B
dc.rightsopenAccess
dc.titleProminent quantum many-body scars in a truncated Schwinger model
dc.typejournal-article
dc.type.versionpublishedVersion
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