Journal
PHYSICAL REVIEW LETTERS
Volume 126, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.227202
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Funding
- Engineering and Physical Sciences Research Council (EPSRC) [EP/K028960/1, EP/M007065/1, EP/P034616/1]
- NSF [DMR-1653271]
- Engineering and Physical Sciences Research Council [EP/P020259/1]
- Science and Technology Facilities Council
- EPSRC [EP/P020259/1, EP/P034616/1, EP/K028960/1, EP/M007065/1] Funding Source: UKRI
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We investigated the finite-temperature dynamics of quasi-1D orbital compass and plaquette Ising models, finding that they exhibit many-body localization features at certain temperatures, although they can be analyzed using free-fermion techniques.
We explore the finite-temperature dynamics of the quasi-1D orbital compass and plaquette Ising models. We map these systems onto a model of free fermions coupled to strictly localized spin-1/2 degrees of freedom. At finite temperature, the localized degrees of freedom act as emergent disorder and localize the fermions. Although the model can be analyzed using free-fermion techniques, it has dynamical signatures in common with typical many-body localized systems: Starting from generic initial states, entanglement grows logarithmically; in addition, equilibrium dynamical correlation functions decay with an exponent that varies continuously with temperature and model parameters. These quasi-1D models offer an experimentally realizable setting in which natural dynamical probes show signatures of disorder-free many-body localization.
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