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arXiv 1201.4028astro-ph.HEhep-ph
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恒星质量的QCD与BlackHoles

QCD against BlackHoles of Stellar Mass

Ilya I. Royzen

摘要:

在致密恒星内部核子(中子)间距的巩固过程中,两个关键因素预计将同时发挥作用:缺乏自我稳定以防止关闭到黑洞(BH)和即将发生的相变-颜色解除限制和QCD-真空重建-在组成恒星的核物质内。这些现象使恒星以完全不同的(相反的)方式演化,应该立即考虑到,因为引力压缩被认为是。在上述跃迁下,预计会发生在任何超大质量中子星(NS)中,强子相(HPh)真空-胶子和手征$q\bar q$凝聚体的相干态-首先在恒星中心附近变成“空”态。(微扰)亚强子相(SHPh)1,因此,预先存在(非常高的)真空压力突然下降;结果,“冷”星开始几乎自由地坍缩到新的真空中。如果恒星质量足够大,那么这种内爆会导致恒星中心区域内的巨大加热(温度高达100-200 MeV,甚至更高),这使得内部的压力增长,主要是由于简并破缺和多个$q\bar q$对的产生。因此,一个“火焰墙”可能会出现,它承受住进一步的坍缩,并使恒星脱离不可撤销地关闭到BH。相反,恒星要么形成一个短暂的准稳态(只是相对较低的恒星质量的情况),失去质量,逐渐演变成“正常”的稳定NS,或者注定完全自我清算(在更高的质量)。

英文摘要:

In course of the consolidation of nucleon (neutron) spacing inside a compact star, two key factors are expected to come into play side by side: the lack of self-stabilization against shutting into black hole (BH) and forthcoming phase transition - color deconfinement and QCD-vacuum reconstruction - within the nuclear matter the star is composed of. These phenomena bring the star to evolve in the quite different (opposite) ways and should be taken into account at once, as the gravitational compression is considered. Under the above transition, which is expected to occur within any supermassive neutron star (NS), the hadronic-phase (HPh) vacuum - a coherent state of gluon- and chiral $q\bar q$-condensates - turns, first near the star center, into the "empty" (perturbation) subhadronic-phase (SHPh) one and, thus, pre-existing (very high) vacuum pressure falls there down rather abruptly; as a result, the "cold" star starts collapsing almost freely into the new vacuum. If the stellar mass is sufficiently large, then this implosion is shown to result in an enormous heating within the star central domain (up to a temperature about 100-200 MeV or, maybe, even higher), what makes the pressure from within to grow up, predominantly due to degeneracy breaking and multiple $q\bar q$-pair production. Thus, a "flaming wall" could arise, which withstands the further collapsing and brings the star off the irrevocable shutting into BH. Instead, the star either forms a transient quasi-steady state (just the case of relatively low star mass) and, losing its mass, evolves gradually into the "normal" steady NS, or is doomed for self-liquidation in full (at higher masses).

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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