



01622nas a2200193   4500008004100000245008300041210006900124260001400193520097000207653002701177653005201204100002101256700003001277700002001307700002501327700002101352700001801373856003701391       2022                        eng d00aQuantum Many-Body Scars from Einstein-Podolsky-Rosen States in Bilayer Systems0 aQuantum ManyBody Scars from EinsteinPodolskyRosen States in Bila  c9/12/20223 a<p>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. We elaborate on a construction of quantum many-body scar states in which they emerge from Einstein-Podolsky-Rosen (EPR) 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 {\it infinite} tower of many-body scar states can emerge in bilayer Bose-Hubbard models with charge conservation.</p>10aFOS: Physical sciences10aStrongly Correlated Electrons (cond-mat.str-el)1 aWildeboer, Julia1 aLanglett, Christopher, M.1 aYang, Zhi-Cheng1 aGorshkov, Alexey, V.1 aIadecola, Thomas1 aXu, Shenglong  uhttps://arxiv.org/abs/2209.05527