Spin models and criticality from atoms in a tilted optical superlattice

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• Chris Hooley (St Andrews)
• Friday 21 June 2019, 14:00-15:00
• Theory Library.

If you have a question about this talk, please contact Mike Gunn.

https://arxiv.org/abs/1811.06995 https://arxiv.org/abs/1811.06998

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 1D, we show that coupled Ising spin chains with XZ and ZZ spin coupling terms can be engineered.

We use optimised tensor network techniques to explore the criticality and non-equilibrium 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.

This talk is part of the Theoretical Physics Seminars series.

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• Bham Talks
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