Speaker
Description
Spin imbalance in ultracold Fermi gases gives rise to a rich variety of structures rooted in the competition between pairing and polarization. I will present a survey of our recent results, starting from the static phase diagram where disordered configurations compete energetically with Larkin-Ovchinnikov-Fulde-Ferrell (LOFF)-type ordered states across a wide range of polarizations. I will then turn to dynamics, where quantum vortices emerge as sensitive probes of the underlying superfluid structure. Topics include vortex dipole deflection by localized spin-polarized regions, vortex-mediated spin transfer in disk geometries, and the distinct regimes that appear in spin-imbalanced ring systems, from polarized vortex cores to LOFF-like persistent current states.