COSMIC SEPARATION OF PHASES
COSMIC SEPARATION OF PHASES
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DOI：
10.1103/physrevd.30.272
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发表时间：
1984-01-01
影响因子：
5
通讯作者：
WITTEN, E
中科院分区：
文献类型：
--
作者：
WITTEN, E
在早期宇宙中可逆发生的一阶QCD相变将导致令人惊讶的丰富的宇宙学场景。虽然可观察到的结果不一定存在，但至少可以想象，相变将把大部分夸克过剩集中在密集的、看不见的夸克块中，仅从QCD效应的角度为暗物质提供了解释。只有当夸克物质每重子的能量低于938兆电子伏特时，这种可能性才成立。在附录中考虑了两个相关的问题：中子星产生宇宙射线的夸克物质成分的可能性，以及QCD相变可能产生可探测的引力信号的可能性。
A first-order QCD phase transition that occurred reversibly in the early universe would lead to a surprisingly rich cosmological scenario. Although observable consequences would not necessarily survive, it is at least conceivable that the phase transition would concentrate most of the quark excess in dense, invisible quark nuggets, providing an explanation for the dark matter in terms of QCD effects only. This possibility is viable only if quark matter has energy per baryon less than 938 MeV. Two related issues are considered in appendices: the possibility that neutron stars generate a quark-matter component of cosmic rays, and the possibility that the QCD phase transition may have produced a detectable gravitational signal.