2013/06/30 by Patrick Bruno · 4 citations
Physics and Astronomy · #quant-ph #cond-mat.other #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.111.070402
published as Phys. Rev. Lett. 111, 070402 (2013) · 5 pages (main paper) + 5 pages (supplemental material); v2: typos corrected, references updated; v3: final version, as published (minor changes with respect to v2)
arxiv created 2013/08/19 · arxiv updated 2013/08/20
I present arguments indicating the impossibility of spontaneously rotating quantum timecrystals, as recently proposed by Frank Wilczek [arXiv:1202.2539]. 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.