AI Article Synopsis
- Researchers demonstrate that lattice gauge theories can exhibit many-body localization dynamics even without disorder.
- They observe that certain translationally invariant states lead to dynamics influenced by Gauss's law, effectively averaging over different gauge sectors.
- Extensive simulations of a lattice Schwinger model reveal memory effects and slow entanglement growth, particularly with strong interactions, suggesting connections between confinement and entanglement in many-body localization.
Article Abstract
We show how lattice gauge theories can display many-body localization dynamics in the absence of disorder. Our starting point is the observation that, for some generic translationally invariant states, the Gauss law effectively induces a dynamics which can be described as a disorder average over gauge superselection sectors. We carry out extensive exact simulations on the real-time dynamics of a lattice Schwinger model, describing the coupling between U(1) gauge fields and staggered fermions. Our results show how memory effects and slow, double-logarithmic entanglement growth are present in a broad regime of parameters-in particular, for sufficiently large interactions. These findings are immediately relevant to cold atoms and trapped ion experiments realizing dynamical gauge fields and suggest a new and universal link between confinement and entanglement dynamics in the many-body localized phase of lattice models.
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| http://dx.doi.org/10.1103/PhysRevLett.120.030601 | DOI Listing |
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