Lepton-rich cold QCD matter in protoneutron stars

Lepton-rich cold QCD matter in protoneutron stars
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原中子星中富含轻子的冷 QCD 物质

DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
E. Fraga
E. Fraga
中科院分区:
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文献类型:
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作者:
J. Jiménez;E. Fraga

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在包含电子和中微子的固定轻子分数的情况下,我们使用冷密QCD的最新微扰状态方程研究了质子中子星物质。除了计算由于囚禁中微子的存在对物态方程的修正外,我们还证明了稳定的奇异夸克物质有一个更受限的参数空间。我们还研究了通过将富含轻子的QCD压强与强子状态方程匹配的方法,即TM1与捕获的中微子相匹配,来研究质子中子星核心中未成对夸克物质成核的可能性。利用微扰QCD对重整化尺度参数的内在依赖性,我们给出了我们计算的可观测量中的不确定性的度量。
We investigate protoneutron star matter using the state-of-the-art perturbative equation of state for cold and dense QCD in the presence of a fixed lepton fraction in which both electrons and neutrinos are included. Besides computing the modifications in the equation of state due to the presence of trapped neutrinos, we show that stable strange quark matter has a more restricted parameter space. We also study the possibility of nucleation of unpaired quark matter in the core of protoneutron stars by matching the lepton-rich QCD pressure onto a hadronic equation of state, namely TM1 with trapped neutrinos. Using the inherent dependence of perturbative QCD on the renormalization scale parameter, we provide a measure of the uncertainty in the observables we compute.
DOI: 10.1103/physrevlett.110.032504
发表时间: 2012-05
影响因子: 8.6
作者:
I. Tews;T. Krüger;K. Hebeler;A. Schwenk
通讯作者: I. Tews;T. Krüger;K. Hebeler;A. Schwenk