|New Superfluid States of Fermionic Matter in and out of Equilibrium |
Physics and Astronomy
|Emil Yuzbashyan, Center for Materials Theory, Rutgers Dept. of Physics and Astronomy|
4:45 PM, Physics Lecture Hall
I will describe the response of a fermionic superfluid to fast perturbations. Driven out of equilibrium the system exhibits a rich variety of dynamical phases very distinct in character from its equilibrium properties. These include novel gapless and gapped superfluid states as well as states where the order parameter oscillates. In bulk samples the oscillations lead to a parametric excitation of spatial modulations resulting in a random superposition of wave packets of the superfluid order parameter. I will discuss experiments with ultra-cold Fermi gases where the above dynamical phases can be realized and identify their key signatures in observable quantities. Time permitting I will also consider other examples of unconventional paired states such as multi-component superfluids in atomic fermions.