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arXiv 0706.4381hep-phastro-phnucl-th
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π介子凝聚夸克物质中直接Urca过程的中微子发射

Neutrino Emission From Direct Urca Processes in Pion Condensed Quark Matter

Xuguang Huang, Qun Wang, Pengfei Zhuang

摘要:

本文研究了π凝聚夸克物质中直接Urca过程的中微子发射。在具有高重子密度的致密恒星中,发射主要是由导致发射率增强的π介子凝聚的无隙模式决定的。当$u$ -夸克和$d$ -夸克的质量差相当大时,无质量夸克的辐射增强并不显著,但辐射率明显增大,凝聚态物质的冷却速度明显快于正常夸克物质。

英文摘要:

We study neutrino emission from direct Urca processes in pion condensed quark matter. In compact stars with high baryon density, the emission is dominated by the gapless modes of the pion condensation which leads to an enhanced emissivity. While for massless quarks the enhancement is not remarkable, the emissivity is significantly larger and the cooling of the condensed matter is considerably faster than that in normal quark matter when the mass difference between $u$- and $d$-quarks is sizable.

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。

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