Excitation of Higgs Mode in Superfluid Fermi Gas in BCS–BEC Crossover
Excitation of Higgs Mode in Superfluid Fermi Gas in BCS–BEC Crossover
In quantum many-body systems with spontaneous breaking of continuous symmetries, Higgs modes emerge as collective amplitude oscillations of order parameters. Recently, Higgs mode has been observed in the ultracold Fermi gas. In the present paper, we use the time-dependent Bogoliubov-de Gennes equations to investigate Higgs amplitude oscillations of the superfluid …