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Dissipative "time crystals"

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If you have a question about this talk, please contact Katarzyna Macieszczak.

Discrete time crystals is the (contentious) name given to many-body systems displaying long-time dynamics that is sub-harmonic with respect to a driving frequency. While these were first discussed in closed quantum systems a few years ago, recent work (partly motivated by experiments) has focussed on including non-unitary effects such as due to an external environment (“dissipation”). In this talk I will describe one of the unitary models, then discuss a general framework for subharmonic oscillations stabilised by dissipative dynamics. The unitary and non-unitary phenomena are conceptually distinct.

This talk is part of the Theory of Condensed Matter series.

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