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Linear response of a superfluid Fermi gas inside its pair-breaking continuum

We study the signatures of the collective modes of a superfluid Fermi gas in its linear response functions for the order-parameter and density fluctuations in the Random Phase Approximation (RPA). We show that a resonance associated to the Popov-Andrianov (or sometimes “Higgs”) mode is visible insid...

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Detalles Bibliográficos
Autores principales: Kurkjian, H., Tempere, J., Klimin, S. N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7360786/
https://www.ncbi.nlm.nih.gov/pubmed/32665570
http://dx.doi.org/10.1038/s41598-020-65371-9