δ介子对中子星物质中重子直接Urca过程的影响
The effects of delta mesons on the baryonic direct Urca processes in neutron star matter
摘要：
在相对论平均场论框架下，研究了中子星简并重子物质中核子和超子直接Urca过程的相对论中微子发射率。我们特别研究了交换$δ$介子所考虑的等矢量标量相互作用对核子和超子直接Urca过程的影响。结果表明，$δ$介子的加入使中微子总发射率明显增加，这必然导致中子星物质的冷却速率加快。
英文摘要：
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 $δ$ meson on the nucleonic and hyperonic direct Urca processes. The results indicate that $δ$ mesons lead to obvious enhancement of the total neutrino emissivity, which must result in more rapid cooling rate of neutron star matter.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
