Related papers: Quantum Many-Body Scars in Optical Lattices

Quantum Many-Body Scars in Optical Lattices

URL: http://arxiv.org/abs/2002.01746v2
Date: Fri, 24 Apr 2020 16:10:57 GMT
Title: Quantum Many-Body Scars in Optical Lattices
Authors: Hongzheng Zhao, Joseph Vovrosh, Florian Mintert, and Johannes Knolle
Abstract summary: We propose a simple setup to generate quantum many-body scars in a doubly modulated Bose-Hubbard system. The dynamics are shown to be governed by kinetic constraints which appear via density assisted tunneling in a high-frequency expansion.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The concept of quantum many-body scars has recently been put forward as a route to describe weak ergodicity breaking and violation of the Eigenstate Thermalization Hypothesis. We propose a simple setup to generate quantum many-body scars in a doubly modulated Bose-Hubbard system which can be readily implemented in cold atomic gases. The dynamics are shown to be governed by kinetic constraints which appear via density assisted tunneling in a high-frequency expansion. We find the optimal driving parameters for the kinetically constrained hopping which leads to small isolated subspaces of scared eigenstates. The experimental signatures and the transition to fully thermalizing behavior as a function of driving frequency are analyzed.

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