Kadanoff Seminar:  Spectral Form Factors of attractively interacting fermions. - Victor Gurarie, University of Colorado

Spectral Form Factors of attractively interacting fermions.

Spectral Form Factor and its closely related cousin, Loschmidt echo, represent new ways to characterize quantum many body systems. They can be directly measured in certain atomic systems, and they were also theoretically explored in recent years in a variety of settings, from chaotic systems to integrable ones. I would like to present our study of spectral form factors of attractively interacting fermions which form superconducting states. It turns out that their spectral form factors develop features which reflect the underlying symmetry of the order parameter of these superconductors.