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Anderson-Bogoliubov collective excitations in superfluid Fermi gases at nonzero temperatures

Tijdschriftbijdrage - Tijdschriftartikel

The Anderson-Bogoliubov branch of collective excitations in a condensed Fermi gas is treated using the effective bosonic action of Gaussian pair fluctuations. The spectra of collective excitations are treated for finite temperature and momentum throughout the BCS-BEC crossover. The obtained spectra explain, both qualitatively and quantitatively, recent experimental results on Goldstone modes in atomic Fermi superfluids.
Tijdschrift: Journal of low temperature physics
ISSN: 0022-2291
Volume: 196
Pagina's: 102 - 110
Jaar van publicatie:2019
Trefwoorden:A1 Journal article
BOF-keylabel:ja
BOF-publication weight:1
CSS-citation score:1
Auteurs:International
Authors from:Higher Education
Toegankelijkheid:Closed