Effects of δ mesons on baryonic direct Urca processes in neutron star matter

This study investigates the relativistic neutrino emissivity of the nucleonic and hyperonic direct Urca processes in the degenerate baryon matter of neutron stars, within the framework of relativistic mean field theory. In particular, we study the influence of the isovector scalar interaction on the...

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Bibliographic Details
Published inChinese physics C Vol. 39; no. 10; pp. 77 - 81
Main Author 黄修林 王海军 刘广洲 刘承志 许妍
Format Journal Article
LanguageEnglish
Published 01.10.2015
Subjects
Baryons
Emissivity
Exchanging
Mesons
Neutrinos
Neutron stars
Nucleonics
Scalars
中子星物质
中微子
介子
发射率
相互作用
相对论平均场理论
超子
重子
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ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/39/10/105102

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Summary:This study investigates the relativistic neutrino emissivity of the nucleonic and hyperonic direct Urca processes in the degenerate baryon matter of neutron stars, within the framework of relativistic mean field theory. In particular, we study the influence of the isovector scalar interaction on the nucleonic and hyperonic direct Urca processes by exchanging δ mesons. The results indicate that δ mesons lead to obvious enhancement of the total neutrino emissivity, which must result in a more rapid cooling rate of neutron star matter.
Bibliography:11-5641/O4
neutron star, direct Urca processes, δ meson, neutrino emissivity
This study investigates the relativistic neutrino emissivity of the nucleonic and hyperonic direct Urca processes in the degenerate baryon matter of neutron stars, within the framework of relativistic mean field theory. In particular, we study the influence of the isovector scalar interaction on the nucleonic and hyperonic direct Urca processes by exchanging δ mesons. The results indicate that δ mesons lead to obvious enhancement of the total neutrino emissivity, which must result in a more rapid cooling rate of neutron star matter.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/39/10/105102