Weak ergodicity breaking in the Schwinger model

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dc.citation.issue20
dc.citation.rankM21
dc.citation.spageL201105
dc.citation.volume107
dc.contributor.authorDesaules, Jean-Yves
dc.contributor.authorBanerjee, Debasish
dc.contributor.authorHudomal, Ana
dc.contributor.authorPapić, Zlatko
dc.contributor.authorSen, Arnab
dc.contributor.authorHalimeh, Jad C.
dc.date.accessioned2023-05-11T08:33:58Z
dc.date.available2023-05-11T08:33:58Z
dc.date.issued2023-05-05
dc.description.abstractAs a paradigm of weak ergodicity breaking in disorder-free nonintegrable models, quantum many-body scars (QMBS) can offer deep insights into the thermalization dynamics of gauge theories. Having been first discovered in a spin-1/2 quantum link formulation of the Schwinger model, it is a fundamental question as to whether QMBS persist for S>1/2 since such theories converge to the lattice Schwinger model in the large-S limit, which is the appropriate version of lattice QED in one spatial dimension. In this work, we address this question by exploring QMBS in spin-SU(1) quantum link models (QLMs) with staggered fermions. We find that QMBS persist at S>1/2, with the resonant scarring regime, which occurs for a zero-mass quench, arising from simple high-energy gauge-invariant initial product states. We furthermore find evidence of detuned scarring regimes, which occur for finite-mass quenches starting in the physical vacua and the charge-proliferated state. Our results conclusively show that QMBS exist in a wide class of lattice gauge theories in one spatial dimension represented by spin-SQLMs coupled to dynamical fermions, and our findings can be tested on near-term cold-atom quantum simulators of these models.
dc.identifier.doi10.1103/PhysRevB.107.L201105
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.urihttps://pub.ipb.ac.rs/handle/123456789/19
dc.language.isoen
dc.publisherAmerican Physical Society (APS)
dc.relation.ispartofPhysical Review B
dc.relation.ispartofabbrPhys. Rev. B
dc.rightsopenAccess
dc.titleWeak ergodicity breaking in the Schwinger model
dc.typejournal-article
dc.type.versionpublishedVersion
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