Group Seminar: Low-energy dynamics in correlated Fermi superfluids
Prof. Francesco Scazza, University of Trieste and CNR-INO, Italy
Hybrid group seminar at LMU (Schellingstr. 4, Seminar room H 107) and via video conference (Zoom)
Tuesday, October 5th, 9:00 am (MEZ)
Due to the Covid-19 pandemic, the group seminar will be a hybrid event, allowing participants to attend the seminar virtually and in-person. This procedure enables us to continue our research, enhance discussions and exchange important information.
Ultracold Fermi gases with resonantly tunable interactions provide a powerful testbed for exploring a rich variety of many-body phenomena in correlated fermionic matter, for which accurate theoretical predictions remain challenging even with state-of-the-art computational techniques. In this talk, I will give an overview of recent experiments targeting the study of low-energy dynamics in strongly interacting fermionic fluids. I will focus on investigations of the tunnel conduction both in superfluid and normal Fermi gases [1,2], offering a selective probe of fermion condensation and pairing. I will then report on the recent realisation of a programmable two-dimensional quantum vortex collider in homogeneous Fermi superfluids for revealing the elementary mechanisms of vortex energy relaxation . These studies contribute to the microscopic understanding of the irreversible dynamics governing the hydrodynamic relaxation of nonequilibrium states in bosonic and fermionic fluids.
 Kwon et al., Strongly correlated superfluid order parameters from dc Josephson supercurrents, Science 369, 84 (2020)
 Del Pace et al., Tunneling transport of unitary fermions across the superfluid transition, Phys. Rev. Lett. 126, 055301(2021) Kwon, et al., Sound emission and annihilations in a programmable quantum vortex collider, Nature (in press) — arXiv:2105.15180
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