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arXiv 0905.0352nucl-thastro-ph.SRhep-ph
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致密星的退禁闭相变:混合相的Maxwell与Gibbs构造

Deconfinement Phase Transition in Compact Stars : Maxwell vs. Gibbs Construction of the Mixed Phase

Abhijit Bhattacharyya, Igor N. Mishustin, Walter Greiner

摘要:

通过比较Gibbs和Maxwell构造的混合相,研究了致密星内部一阶退禁闭相变的不同实现。强子扇区是在包含超子的相对论平均场模型中描述的。夸克扇区由MIT袋模型描述。我们发现,这两种认识导致非常不同的恒星性质,特别是恒星物质的组成。我们还发现,对于麦克斯韦结构,重子密度和电子化学势存在一个尖锐的不连续性。我们认为,电子化学势的突变将导致电子的重新分布,并在不连续面周围形成强电场。

英文摘要:

We study different realisations of the first order deconfinement phase transition inside a compact star by comparing the Gibbs and Maxwell construction for the mixed phase. The hadronic sector is described within the relativistic mean field model including hyperons. The quark sector is described by the MIT Bag model. We find that these two realisations lead to very different star properties, in particular, the composition of the stellar matter. We also find that for the Maxwell construction there is a sharp discontinuity in the baryon density and the electron chemical potential. We argue that a sharp jump in the elctron chemical potential should lead to the redistribution of electrons and formation of strong electric fields around the discontinuity surface.

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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