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Floquet quantum criticality.


ABSTRACT: We study transitions between distinct phases of one-dimensional periodically driven (Floquet) systems. We argue that these are generically controlled by infinite-randomness fixed points of a strong-disorder renormalization group procedure. Working in the fermionic representation of the prototypical Floquet Ising chain, we leverage infinite randomness physics to provide a simple description of Floquet (multi)criticality in terms of a distinct type of domain wall associated with time translational symmetry-breaking and the formation of "Floquet time crystals." We validate our analysis via numerical simulations of free-fermion models sufficient to capture the critical physics.

SUBMITTER: Berdanier W 

PROVIDER: S-EPMC6156641 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Floquet quantum criticality.

Berdanier William W   Kolodrubetz Michael M   Parameswaran S A SA   Vasseur Romain R  

Proceedings of the National Academy of Sciences of the United States of America 20180829 38


We study transitions between distinct phases of one-dimensional periodically driven (Floquet) systems. We argue that these are generically controlled by infinite-randomness fixed points of a strong-disorder renormalization group procedure. Working in the fermionic representation of the prototypical Floquet Ising chain, we leverage infinite randomness physics to provide a simple description of Floquet (multi)criticality in terms of a distinct type of domain wall associated with time translational  ...[more]

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