super(1)S sub(0) Nucleon Superfluidity in Neutron Star Matter

We investigate the nucleon superfluidity in the super(1)S sub(0) channel in neutron star matter using the relativistic mean field theory and the BCS theory. We discuss particularly the influence of the isovector scalar interaction which is considered by exchanging delta meson on the nucleon superssu...

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Bibliographic Details
Published in:Chinese physics letters 2013-01, Vol.30 (6), p.062101-1-062101-4
Main Authors: XU, Yan, LIU, Guang-Zhou, LIU, Cheng-Zhi, FAN, Cun-Bo, HAN, Xing-Wei, ZHU, Ming-Feng, WANG, Hong-Yan, ZHANG, Xiao-Jun
Format: Article
Language:English
Subjects:
Channels
Density
Energy gap
Mesons
Neutron stars
Nucleons
Scalars
Superfluidity
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Summary:We investigate the nucleon superfluidity in the super(1)S sub(0) channel in neutron star matter using the relativistic mean field theory and the BCS theory. We discuss particularly the influence of the isovector scalar interaction which is considered by exchanging delta meson on the nucleon superssuidity. It is found that the delta meson leads to a growth of the nucleon super(1)S sub(0) pairing energy gaps in a middle density range of the existing nucleon superssuidity In addition, when the density [rho]B > 0.36 fm super(-3), the proton super(1)S sub(0) pairing energy gap obviously decreases. The density range of the proton super(1)S sub(0) superssuidity is narrowed due to the presence of delta mesons. In our results, the delta meson not only changes the EOS and bulk properties but also changes the cooling properties of neutron stars.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/30/6/062101