Collective oscillations of a two-component Fermi gas on the repulsive branch
arXiv:1908.07771 · doi:10.21468/SciPostPhys.8.4.066
Abstract
We calculate frequencies of collective oscillations of two-component Fermi gas that is kept on the repulsive branch of its energy spectrum. Not only is a paramagnetic phase explored, but also a ferromagnetically separated one. Both in-, and out-of-phase perturbations are investigated, showing contributions from various gas excitations. Additionally, we compare results coming from both time-dependent Hartree-Fock and density-functional approaches.
16 pages, 4 figures, Resubmission to SciPost