Group Seminar: Low-energy dynamics in correlated Fermi superfluids

October 05, 2021

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 [3]. These studies contribute to the microscopic understanding of the irreversible dynamics governing the hydrodynamic relaxation of nonequilibrium states in bosonic and fermionic fluids.

[1] Kwon et al., Strongly correlated superfluid order parameters from dc Josephson supercurrents, Science 369, 84 (2020)
[2] Del Pace et al., Tunneling transport of unitary fermions across the superfluid transition, Phys. Rev. Lett. 126, 055301(2021)[3] Kwon, et al., Sound emission and annihilations in a programmable quantum vortex collider, Nature (in press) — arXiv:2105.15180

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