Discrete Time Crystals

@article{Else2019DiscreteTC,
  title={Discrete Time Crystals},
  author={Dominic V. Else and Christopher R. Monroe and C. Nayak and Norman Y. Yao},
  journal={Annual Review of Condensed Matter Physics},
  year={2019}
}
Experimental advances have allowed for the exploration of nearly isolated quantum many-body systems whose coupling to an external bath is very weak. A particularly interesting class of such systems is those that do not thermalize under their own isolated quantum dynamics. In this review, we highlight the possibility for such systems to exhibit new nonequilibrium phases of matter. In particular, we focus on discrete time crystals, which are many-body phases of matter characterized by a… 

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