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

Anton S. Buyskikh*, Luca Tagliacozzo, Dirk Schuricht, Chris A. Hooley, David Pekker, Andrew J. Daley

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)
19 Downloads (Pure)


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.

Original languageEnglish
Article number090401
Number of pages6
JournalPhysical Review Letters
Issue number9
Publication statusPublished - 27 Aug 2019


  • optical superlattice
  • coupled spin chains
  • tensor network techniques


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