SciPost Submission Page
Collective oscillations of a two-component Fermi gas on the repulsive branch
by Tomasz Karpiuk, Piotr T. Grochowski, Mirosław Brewczyk, Kazimierz Rzążewski
This Submission thread is now published as
Submission summary
| Ontological classification |
| Academic field: |
Physics |
| Specialties: |
- Atomic, Molecular and Optical Physics - Theory
|
| Approach: |
Theoretical |
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.
List of changes
- We unified the notation, changing the many-body wave function to express the spatial orbitals explicitly.
- We included explicit definitions of quantities we plot in the backgrounds of different panels in Fig. 3.
- We revised Figs. 3-8.
- We removed presumptuous statements in the text.
- We improved the language throughout the text.
- We elaborated on the applicability of hydrodynamics.
- We added a plot in which we directly compare frequency branches in different cases.
- We added a paragraph with details of numerics.
