Population imbalanced superfluidity in ultracold atomic Fermi systems in the BEC limit (Skype Talk)

by Dr Salman Silotri (National Chiao Tung University, Taiwan))

Thursday 11 Jul 2013, 11:30 → 12:30 Asia/Kolkata

A304 (Colaba Campus)

Ultracold atomic Fermi systems present unique opportunity to explore exotic superfluid states.One such scenario is survival of superfluidity under population imbalance of its pairing constituents. In this talk, population imbalanced two-component Fermi system under harmonic confinement (trap) in the BEC regime of interaction is discussed. In this regime Sarma phase or polarized superfluid is stable where excess fermions occupy negative quisiparticle energy states. The system exhibit shell structure: unpolarized superfluid -> polarized superfluid ->normal state. Furthermore it is shown that using two different trap frequencies, shell radii can be tuned eventually forming polarized superfluid core at experimentally feasible polarization. Reference: PRA 81, 013623 (2010)