Spin models, dynamics, and criticality with atoms in tilted optical superlattices

Buyskikh, Anton S. and Tagliacozzo, Luca and Schuricht, Dirk and Hooley, Chris A. and Pekker, David and Daley, Andrew J. (2019) Spin models, dynamics, and criticality with atoms in tilted optical superlattices. Physical Review Letters, 123 (9). 090401. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.123.090401)

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Abstract

We show that atoms in tilted optical superlattices provide a platform for exploring coupled spin chains of forms that are not present in other systems. In particular, using a period-2 superlattice in one dimension, we show that coupled Ising spin chains with XZ and ZZ spin coupling terms can be engineered. We use optimized tensor network techniques to explore the criticality and nonequilibrium dynamics in these models, finding a tricritical Ising point in regimes that are accessible in current experiments. These setups are ideal for studying low-entropy physics, as initial entropy is "frozen-out" in realizing the spin models, and provide an example of the complex critical behavior that can arise from interaction-projected models.

  • Item type:Article
    ID code:70331
    Dates:
    Date
    Event
    27 August 2019
    Published
    29 July 2019
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:29 Oct 2019 10:14
    Last modified:09 Apr 2024 00:58
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/70331
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