"BCS-BEC Crossover in Ultracold Atoms: Vortices and Quantum Fluctuations"

Mohit Randeria
The Ohio State University

Abstract:

In this seminar I will first introduce the problem of the BCS to BEC crossover
in a Fermi gas with arbitrary interactions and describe the progress
in realizing these ideas in experiments with ultracold atomic gases. I will then
discuss three questions: (1) How quantum fluctuations about the mean field state impact
observable properties in the crossover; (2) How the voretx and core
states evolve from the BCS to the BEC limits; (3) Why the most strongly interacting
regime at unitarity leads to the most robust superfluid in the entire crossover.