Time crystals without localization?
Observation of discrete time-crystalline order in a disordered dipolar many-body system
Authors: Soonwon Choi, Joonhee Choi, Renate Landig, Georg Kucsko, Hengyun Zhou, Junichi Isoya, Fedor Jelezko, Shinobu Onoda, Hitoshi Sumiya, Vedika Khemani, Curt von Keyserlingk, Norman Y. Yao, Eugene Demler, and Mikhail D. Lukin
Nature 543, 221225 (2017), arXiv:1610.08057
Recommended with a commentary by Rahul Nandkishore, University of Colorado at Boulder.
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DOI: 10.36471/JCCM_April_2017_03
https://doi.org/10.36471/JCCM_April_2017_03
More on time crystals, explaining why MBL is not necessary for this phenomenon (although may be helpful in some systems) may be found in K.Sacha and J. Zakrzewski, Time crystals: a review arXiv:1704.03735.