质子中子星中的夸克-强子混合相
Quark-hadron mixed phases in protoneutron stars
摘要:
我们考虑了在质子中子星中夸克强子混合相的可能形成。我们讨论两种情况:第一个相对应于夸克物质的表面张力的极小值,是众所周知的混合相,其中施加了整体电荷中性条件。反过来,这产生了非恒压混合相。在第二种情况下,对应于非常大的值的表面张力,电荷中性条件只在局部。然而,在质子中子星物质中存在一个额外的全局守恒电荷,轻子数,允许一种新的非恒压混合相。我们讨论了新的混合相的性质及其在质子中子星演化过程中可能产生的影响。
英文摘要:
We consider the possible formation of the quark hadron mixed phase in protoneutron stars. We discuss two cases: the first one, corresponding to a vanishingly small value of the surface tension of quark matter, is the well known mixed phase in which the global electric charge neutrality condition is imposed. In turn, this produces a non-constant pressure mixed phase. In the second case, corresponding to very large values of the surface tension, the charge neutrality condition holds only locally. However, the existence in protoneutron star matter of an additional globally conserved charge, the lepton number, allows for a new type of non-constant pressure mixed phase. We discuss the properties of the new mixed phase and the possible effects of its formation during the evolution of protoneutron stars.
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