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Superfluid density, Josephson relation and pairing fluctuations in a multi-component fermion superfluid

In this work, a Josephson relation is generalized to a multi-component fermion superfluid. Superfluid density is expressed through a two-particle Green function for pairing states. When the system has only one gapless collective excitation mode, the Josephson relation is simplified, which is given i...

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Detalles Bibliográficos
Autor principal: Zhang, Yi-Cai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8575947/
https://www.ncbi.nlm.nih.gov/pubmed/34750432
http://dx.doi.org/10.1038/s41598-021-01261-y