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arXiv 0811.0604nucl-thastro-ph
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均匀中子星物质的元激发

Elementary excitations in homogeneous neutron star matter

Marcello Baldo, Camille Ducoin

摘要:

本文研究了在核饱和($ρ_0$)和$3ρ_0$之间的重子密度范围内影响中子星热力学的集体密度模。在这个区域,中子星物质的预期成分主要是中子、质子和电子($npe$物质),在β平衡的约束下。在RPA框架下研究了这种$npe$介质的元激发。我们强调库仑相互作用的效果,特别是质子等离子体激元模式的电子屏蔽。对于核相互作用的治疗,我们比较了两个现代Skyrme力和微观的方法。观察到核子有效质量的重要性。

英文摘要:

We study the collective density modes which can affect neutron-star thermodynamics in the baryonic density range between nuclear saturation ($ρ_0$) and $3ρ_0$. In this region, the expected constituents of neutron-star matter are mainly neutrons, protons and electrons ($npe$ matter), under the constraint of beta equilibrium. The elementary excitations of this $npe$ medium are studied in the RPA framework. We emphasize the effect of Coulomb interaction, in particular the electron screening of the proton plasmon mode. For the treatment of the nuclear interaction, we compare two modern Skyrme forces and a microscopic approach. The importance of the nucleon effective mass is observed.

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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