热夸克物质中中微子扩散输运的详细分析
Neutrino diffusive transport in hot quark matter: a detailed analysis
摘要：
我们进行了广泛的分析中微子扩散夸克物质内的MIT袋模型在任意温度和简并。我们详细研究了每个相关的弱相互作用过程对中微子总不透明度的贡献，并评估了奇异夸克质量、袋常数和QCD微扰修正对MIT袋模型的影响。我们还研究了各向异性对中微子散射分布函数、平均能量转移和平均散射角的贡献。的密度和温度依赖性的扩散系数$D_n$，管理的冷却和去质子化的紧凑型恒星的详细说明。最后，我们的中微子平均自由程的数值计算结果与已知的解析近似进行了比较。我们的结论是中微子散射构成了一个显着的一部分，总中微子不透明度在轻子化夸克物质和中微子-夸克散射，在一般情况下，非常相似的中微子-电子散射的平均能量转移每散射和平均散射角。
英文摘要：
We perform an extensive analysis of neutrino diffusion in quark matter within the MIT bag model at arbitrary temperature and degeneracy. We examine in detail the contribution of each of the relevant weak interaction processes to the total neutrino opacity and evaluate the effect of the strange quark mass, the bag constant, and the QCD perturbative corrections to the MIT bag model. We also investigate the anisotropic contribution to the neutrino distribution function in scatterings, the mean energy transfer and the mean scattering angle. The density and temperature dependence of the diffusion coefficients $D_n$ that govern the cooling and deleptonization of a compact star is shown in detail. Finally, our numerical results for the neutrino mean free paths are compared against known analytic approximations. We conclude that neutrino scattering constitutes a significant portion of the total neutrino opacity in leptonized quark matter and neutrino-quark scattering is, in general, very similar to neutrino-electron scattering with respect to both mean energy transfer per scattering and mean scattering angle.
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