Quantum scars of bosons with correlated hopping
ORAL
Abstract
Recent experiments on Rydberg atom arrays have found evidence of anomalously slow thermalization and persistent density oscillations, which have been interpreted as a many-body analog of the phenomenon of quantum scars. Periodic dynamics and atypical scarred eigenstates originate from a "hard" kinetic constraint: the neighboring Rydberg atoms cannot be simultaneously excited. Here we propose a realization of quantum many-body scars in a 1D bosonic lattice model with a "soft" constraint in the form of density-assisted hopping. We discuss the relation of this model to the standard Bose-Hubbard model and possible experimental realizations using ultracold atoms. We find that this model exhibits similar phenomenology to the Rydberg atom chain, including weakly entangled eigenstates at high energy densities and the presence of a large number of exact zero energy states, with distinct algebraic structure.
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Presenters
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Ana Hudomal
School of Physics and Astronomy, University of Leeds, University of Leeds
Authors
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Ana Hudomal
School of Physics and Astronomy, University of Leeds, University of Leeds
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Ivana Vasic
Scientific Computing Laboratory, Institute of Physics Belgrade
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Nicolas Regnault
Department of Physics, Princeton University, Princeton University, Ecole Normale Superieure, Physics, Princeton University
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Zlatko Papic
Univ of Leeds, School of Physics and Astronomy, University of Leeds, University of Leeds