Quantum many-body scars from Einstein-Podolsky-Rosen states in bilayer systems

Quantum many-body scar states are special eigenstates of nonintegrable models with distinctive entanglement features that give rise to infinitely long-lived coherent dynamics under quantum quenches from certain initial states. Here, we elaborate on a construction of quantum many-body scar states in...

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Published in:Physical review. B 2022-11, Vol.106 (20), Article 205142
Main Authors: Wildeboer, Julia, Langlett, Christopher M., Yang, Zhi-Cheng, Gorshkov, Alexey V., Iadecola, Thomas, Xu, Shenglong
Format: Article
Language:English
Subjects:
cellular bilayers
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Eigenstate thermalization
exact diagonalization
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container_issue 20
container_start_page
container_title Physical review. B
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creator Wildeboer, Julia
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Yang, Zhi-Cheng
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Xu, Shenglong
description Quantum many-body scar states are special eigenstates of nonintegrable models with distinctive entanglement features that give rise to infinitely long-lived coherent dynamics under quantum quenches from certain initial states. Here, we elaborate on a construction of quantum many-body scar states in which they emerge from Einstein-Podolsky-Rosen states in systems with two layers, wherein the two layers are maximally entangled. We apply this construction to spin systems as well as systems of itinerant fermions and bosons and demonstrate how symmetries can be harnessed to enhance its versatility. We show that several well-known examples of quantum many-body scars, including the tower of states in the spin-1 XY model and the η-pairing states in the Fermi-Hubbard model, can be understood within this formalism. We also demonstrate how an infinite tower of many-body scar states can emerge in bilayer Bose-Hubbard models with charge conservation.
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects cellular bilayers
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Eigenstate thermalization
exact diagonalization
title Quantum many-body scars from Einstein-Podolsky-Rosen states in bilayer systems
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