2007/04/30 by A. K. Kolezhuk, Alexei Kolezhuk
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum optics and atomic interactions #Quantum, superfluid, helium dynamics #cond-mat.other #physics.atom-ph #quant-ph
paper · pdf · doi:10.1103/physrevlett.99.020405
published as Phys. Rev. Lett. 99, 020405 (2007) · final published version
openalex publication_date 2007/07/13 · arxiv created 2007/07/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
It is shown that fermionic polar molecules or atoms in a bilayer optical lattice can undergo the transition to a state with circulating currents, which spontaneously breaks the time reversal symmetry. Estimates of relevant temperature scales are given, and experimental signatures of the circulating current phase are identified. Related phenomena in bosonic and spin systems with ring exchange are discussed.