# 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.
136 Citations
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