Berlin 2008 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 38: Matter At Low Temperature: Quantum Liquids, Bose-Einstein Condensates, Ultra-cold Atoms, ...

TT 38.6: Vortrag

Freitag, 29. Februar 2008, 11:45–12:00, H 3010

Circulating currents in fermionic bilayers — •Alexei Kolezhuk — Institut für Theoretische Physik C, RWTH Aachen, Germany

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. The bilayer lattice design is proposed, 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.