Dense Quark Matter in Nature
Dense Quark Matter in Nature
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DOI：
10.1143/ptps.153.1
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发表时间：
2003-12
影响因子：
--
通讯作者：
M. Alford
中科院分区：
文献类型：
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作者：
M. Alford
根据量子色动力学（QCD），超高密度的物质将以色超导夸克液体的形式存在，其中在费米表面附近存在库珀夸克对的凝聚体。我提出了一个审查的物理学的颜色超导性。我特别注意最近提出的无隙CFL（gCFL）相，它具有不寻常的性质，如准夸克与近二次色散关系，这很可能是夸克物质的密度范围内的致密星的青睐相。我还讨论了色超导性对致密恒星质量-半径关系的影响，表明人们必须通过其他测量来固定袋常数，才能看到色超导性的影响。夸克物质状态方程中的一个附加参数与微扰修正相联系，使得夸克物质能够在相关密度范围内模仿核物质，这样混合星就可以表现出与核物质非常相似的质量-半径关系，它们的质量可以达到1.9 M O.
According to quantum chromodynamics (QCD), matter at ultra-high densities will take the form of a color-superconducting quark liquid, in which there is a condensate of Cooper pairs of quarks near the Fermi surface. I present a review of the physics of color superconductivity. I give particular attention to the recently proposed gapless CFL (gCFL) phase, which has unusual properties such as quasiquarks with a near-quadratic dispersion relation, and which may well be the favored phase of quark matter in the density range relevant to compact stars. I also discuss the effects of color superconductivity on the mass-radius relationship of compact stars, showing that one would have to fix the bag constant by other measurements in order to see the effects of color superconductivity. An additional parameter in the quark matter equation of state connected with perturbative corrections allows quark matter to imitate nuclear matter over the relevant density range so that hybrid stars can show a mass-radius relationship very similar to that of nuclear matter, and their masses can reach 1.9 M O ..