论文标题
脉冲星时阵列是否检测到热爆炸？早期宇宙中强一级相变的重力波
Have Pulsar Timing Arrays detected the Hot Big Bang? Gravitational Waves from Strong First Order Phase Transitions in the Early Universe
论文作者
论文摘要
宇宙中物质和辐射的起源在于一场热爆炸。我们介绍了许多动机的宇宙学，其中大爆炸是通过强大的一阶相过渡发生的 - 要么在通货膨胀结束后，之后（“ Kination诱发的大爆炸”），要么在早期宇宙中第二阶段的真空疗法（“超冷的大爆炸”）；我们还提出了一个“深色大爆炸”，其中只有宇宙中的暗物质是在通货膨胀后在一阶转换中创建的。在所有这些情况下，如果热大爆炸的重新加热温度，则可以解释纳米格拉夫，帕克斯和欧洲脉冲星时阵列阵列报告的暂定信号，以及相应的虚假真空能量尺度，属于$ t_* \ simρ_* \ sim pac_ {在较高的地面和太空干涉仪以较大频率下的重力波搜索的较高的地面和空间干涉仪的搜索中，所有相同的模型都将引起人们的关注。
The origins of matter and radiation in the universe lie in a Hot Big Bang. We present a number of well-motivated cosmologies in which the Big Bang occurs through a strong first order phase transition -- either at the end of inflation, after a period of kination ("Kination-Induced Big Bang"), or after a second period of vacuum-domination in the early universe ("Supercooled Big Bang"); we also propose a "Dark Big Bang" where only the dark matter in the Universe is created in a first-order phase transition much after inflation. In all of these scenarios, the resulting gravitational radiation can explain the tentative signals reported by the NANOGrav, Parkes and European Pulsar Timing Array experiments if the reheating temperature of the Hot Big Bang, and correspondingly the energy scale of the false vacuum, falls in the range $T_* \sim ρ_{\rm vac}^{1/4} $= MeV--100 GeV. All the same models at higher reheating temperatures will be of interest to upcoming ground- and space-based interferometer searches for gravitational waves at larger frequency.
