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arXiv 1012.3046nucl-th
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质子中子星中夸克相的形成:从2SC到正常夸克相的转变

Formation of quark phases in protoneutron stars: the transition from the 2SC to the normal quark phase

G. ~Pagliara

摘要:

我们研究了质子中子星中夸克相的形成过程。通过计算在一定熵和轻子分数下核子物质与2SC相之间的相变,我们发现当轻子分数较低时,2SC相与正常夸克相之间发生不成对的相变.然后,我们计算的质子中子星的中微子的扩散过程,并表明,对于中间值的质量的恒星,脱轻子触发的两个夸克相位之间的相变经过几秒钟的时间延迟。相反,在质量较小的恒星中,在去轻子化阶段结束时只形成正常的夸克相。我们还讨论了我们的方案可能的天体物理意义。

英文摘要:

We study the process of formation of quark phases in protoneutron stars. After calculating the phase transition between nucleonic matter and the 2SC phase at fixed entropy and lepton fraction, we show that an unpairing transition between the 2SC phase and the normal quark phase occurs for low lepton fractions. We then calculate the process of diffusion of neutrinos in protoneutron stars and show that for intermediate values of the mass of the star, the deleptonization triggers the phase transition between the two quark phases after a temporal delay of a few seconds. In less massive stars instead only the normal quark phase is formed at the end of the deleptonization stage. We also discuss the possible astrophysical implications of our scenario.

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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