Spontaneous oscillations in quantum systems
Floquet Time Crystals.
Authors: Dominic V. Else, Bela Bauer, and Chetan Nayak.
arXiv:1603.08001
Recommended with a commentary by Leon Balents, UCSB.
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DOI: 10.36471/JCCM_June_2016_01
https://doi.org/10.36471/JCCM_June_2016_01
I believe that both the original article and the comment omit the relevant recent relevant works of my colleague
Krzysztof Sacha, “Modeling spontaneous breaking of time-translation symmetry”, Phys. Rev. A91, 033617 (2015) (arXiv:1410.3638) as well as “Anderson localization and Mott insulator phase in the time domain”, Sci. Rep. 5, 10787 (2015) (arXiv:1502.02507). These works show that many-body physics is not essencial for the phenomenon.
Jakub Zakrzewski, Jagiellonian University in Krakow, Poland