The effects of delta mesons on the baryonic direct Urca processes in neutron star matter

Abstract

In the framework of relativistic mean field theory, the relativistic neutrino emissivity of the nucleonic and hyperonic direct Urca processes in the degenerate baryon matter of neutron stars are studied. We investigate particularly the influence of the isovector scalar interaction which is considered by exchanging $\delta$ meson on the nucleonic and hyperonic direct Urca processes. The results indicate that $\delta$ mesons lead to obvious enhancement of the total neutrino emissivity, which must result in more rapid cooling rate of neutron star matter.

References in corpus (11)

• Neutron Star Cooling
• Neutrino Emission from Neutron Stars
• Hyperon-rich Matter in Neutron Stars
• Asymmetric nuclear matter:the role of the isovector scalar channel
• Nuclear Matter in Relativistic Mean Field Theory with Isovector Scalar Meson
• Nucleon Superfluidity vs Observations of Cooling Neutron Stars
• Implications of Hyperon Pairing for Cooling of Neutron Stars
• Neutron stars with isovector scalar correlations
• The influence of strength of hyperon-hyperon interactions on neutron star properties
• Direct Urca processes on nucleons in cooling neutron stars
• Relativistic direct Urca processes in cooling neutron stars

Cited by in corpus (1)

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