Collective oscillations of a two-component Fermi gas on the repulsive branch
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.
- Publication:
-
SciPost Physics
- Pub Date:
- April 2020
- DOI:
- 10.21468/SciPostPhys.8.4.066
- arXiv:
- arXiv:1908.07771
- Bibcode:
- 2020ScPP....8...66K
- Keywords:
-
- Condensed Matter - Quantum Gases
- E-Print:
- 16 pages, 4 figures, Resubmission to SciPost