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arXiv 0905.3518nucl-thhep-ph
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(原)中子星中的K介子性质

Kaon properties in (proto)neutron stars

Amruta Mishra, Arvind Kumar, Sambuddha Sanyal, V. Dexheimer, Stefan Schramm

摘要:

利用手征SU(3)模型研究了(原)中子星内部K介子和反K介子性质的修正。模型的参数与核物质饱和性质、重子八重态真空质量、超子光学势和低能α-K介子-核子散射长度进行了拟合。我们研究了K介子/反K介子介质的修正,探讨了在零温度、有限温度/熵和有限中微子含量下(原)中子星物质中反K介子凝聚的可能性。研究了在中子星演化的不同阶段超子对K介子和反K介子光学势的影响。

英文摘要:

The modification on kaon and antikaon properties of in the interior of (proto-)neutron stars is investigated using a chiral SU(3) model. The parameters of the model are fitted to nuclear matter saturation properties, baryon octet vacuum masses, hyperon optical potentials and low energy a kaon-nucleon scattering lengths. We study the kaon/antikaon medium modification and explore the possibility of antikaon condensation in (proto-)neutron star matter at zero as well as finite temperature/entropy and neutrino content. The effect of hyperons on kaon and antikaon optical potentials is also investigated at different stages of the neutron star evolution.

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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