Thursday, October 30, 2008, Condensed Matter Seminar, Prof. Arun Paramekanti, Dept. of Physics, University of Toronto, "Superfluid Insulator Transition and Dynamical Instabilities of Cold Atom Fermi Superfluids," 4:30 PM, 104 Thaw Hall, PITT

Abstract

I will discuss our recent theoretical work on multiband superfluidity and the superfluid to band insulator transition of ultracold fermionic superfluids in optical lattices.  We will then turn to a single band Hubbard model which is appropriate in the deep lattice limit and discuss how superflow breaks down via dynamical instabilities associated with competing charge ordered states.  Finally, I will present arguments for flow induced supersolid order in cases where longer range interactions may be present, such as in dipolar superfluids.