Impossibility of spontaneously rotating time crystals: a no-go theorem.

@article{Bruno2013ImpossibilityOS,
  title={Impossibility of spontaneously rotating time crystals: a no-go theorem.},
  author={Patrick Bruno},
  journal={Physical review letters},
  year={2013},
  volume={111 7},
  pages={
          070402
        }
}
  • P. Bruno
  • Published 26 June 2013
  • Physics
  • Physical review letters
I present arguments indicating the impossibility of spontaneously rotating "quantum time crystals," as recently proposed by Frank Wilczek. In particular, I prove a "no-go theorem," rigorously ruling out the possibility of spontaneous ground-state (or thermal equilibrium) rotation for a broad class of systems. 
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