Seminarium Optyczne

Abstract:Grochowski et al. [Phys. Rev. Lett. 125, 103401 (2020)]By analyzing the breathing mode of a Bose-Einstein condensate repulsively interacting with apolarized fermionic cloud, we further the understanding of a Bose-Fermi mixture recently realizedby Lous et al. [Phys. Rev. Lett. 120, 243403 (2018)]. We show that a hydrodynamic description of adomain wall between bosonic and fermionic atoms reproduces the experimental data of Huang et al.[Phys. Rev. A 99, 041602(R) (2019)]. Two different types of interaction renormalization areexplored, based on lowest-order constrained variational and perturbation techniques. In order toreplicate nonmonotonic behavior of the oscillation frequency observed in the experiment,temperature effects have to be included. We find that the frequency down-shift is caused by thefermion-induced compression and rethermalization of the bosonic species as the system is quenchedinto the strongly interacting regime.

Seminarium z użyciem połączenia internetowegohttps://zoom.us/j/97696726563(meeting ID: ID 97696726563, password: 314297)