Entropic order

ORAL

Abstract

Ordered phases of matter, such as solids, ferromagnets, superfluids, or quantum topological order, typically only exist at low temperatures. Despite this conventional wisdom, we present explicit local models in which all such phases persist to arbitrarily high temperature. This is possible since order in one degree of freedom can enable other degrees of freedom to strongly fluctuate, leading to entropic order. Using interacting bosons, we construct local lattice models to display this entropic order that is provably stable against classical/quantum perturbations. Finally, we discuss how such models could be realized and probed in cold-atom experiments.

*This work was supported by the National Science Foundation under CAREER Grant DMR-2145544 (XH, AL) and Grant PHY-2310283 (ZK), by the Air Force Office of Scientific Research under Grant FA9550-24-1-0120 (YH, AL), and by the US-Israel Binational Science Foundation under Grant 2018204 (ZK).

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Presenters

  • Xiaoyang Huang

    • Perimeter Institute

Authors

  • Xiaoyang Huang

    • Perimeter Institute

  • Yiqiu Han

    • University of Colorado, Boulder

  • Andrew J Lucas

    • University of Colorado, Boulder
    • Department of Physics and Center for Theory of Quantum Matter, University of Colorado, Boulder, CO 80309, USA

  • Zohar Komargodski

    • Stony Brook U., New York, SCGP

  • Fedor Popov

    • Stony Brook U., New York, SCGP

  • Tin Sulejmanpasic

    • Durham U., CPT