Shear Viscosity in the Strong Interaction Regime of a p-wave Superfluid Fermi Gas

The \(p\)-wave superfluid state is a promising spin-triplet and non \(s\)-wave pairing state in an ultracold Fermi gas. In this work we study the low-temperature shear viscosity of a one-component \(p\)-wave superfluid Fermi gas, by means of Kubo formalism. Our study is done in the strong-coupling l...

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Bibliographic Details
Published in:arXiv.org 2020-12
Main Authors: Seyed Mostafa Moniri, Yavari, Heshmatollah, Darsheshdar, Elnaz
Format: Article
Language:English
Subjects:
Anisotropy
Bosons
Fermi gases
Fluids
Low temperature
P waves
Shear viscosity
Strong interactions (field theory)
Superfluidity
Temperature dependence
Transport properties
Viscosity
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Summary:The \(p\)-wave superfluid state is a promising spin-triplet and non \(s\)-wave pairing state in an ultracold Fermi gas. In this work we study the low-temperature shear viscosity of a one-component \(p\)-wave superfluid Fermi gas, by means of Kubo formalism. Our study is done in the strong-coupling limit where Fermi superfluid reduces into a system of composite bosons. Taking into account \({{p}_{x}}\)-wave Cooper channel in the self-energy, the viscous relaxation rates are determined. The relaxation rates related to these interactions are calculated as a function of temperature. Their temperature dependence is different from the \(s\)-wave superfluid Fermi gas, and this is due to the anisotropic pairing interaction in the \(p\)-wave superfluid. Our results contribute to understand how this anisotropy affects transport properties of this unconventional superfluid Fermi gas in low temperature limit.
ISSN:2331-8422
DOI:10.48550/arxiv.2012.04535