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arXiv 2305.09712hep-phgr-qc
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来自再加热的引力波特征

Gravitational-wave signatures from reheating

Manuel A. Buen-Abad, Jae Hyeok Chang, Anson Hook

AI总结:

本研究探究宇宙再加热期间升温相变的引力波特征,指出其与降温相变特征存在差异,反摩擦效应会显著增强升温相变的引力波信号振幅,两类相变的关联可用于探测再加热过程。

摘要:

我们启动了一项关于再加热期间宇宙温度上升时发生的相变的引力波特征的研究。这类升温相变的引力波特征与降温相变的不同,对它们的探测能让我们得以探究再加热过程。在幸运的情况下,若升温与降温相变的引力波特征都能被观测到,原则上可利用两种相变之间的关联获取再加热的相关信息。摩擦效应在一种情况中会使泡壁速度恒定,在另一种情况中则会表现为“反摩擦”力并加速泡壁。这种反摩擦通常会将泡壁带入失控状态,显著增强升温相变引力波信号的振幅。两种相变的效率、强度和持续时间也会以依赖于再加热的方式呈现相似的关联。

英文摘要:

We initiate a study of the gravitational-wave signatures of a phase transition that occurs as the Universe's temperature increases during reheating. The gravitational-wave signatures of such a heating phase transition are different from those of a cooling phase transition, and their detection could allow us to probe reheating. In the lucky case that the gravitational-wave signatures from both the heating and cooling phase transitions were to be observed, information about reheating could in principle be obtained utilizing the correlations between the two transitions. Frictional effects, leading to a constant bubble-wall speed in one case, will instead behave as an ``antifriction'' force in the other and accelerate the bubble wall. This antifriction will often take the bubble into a runaway regime, significantly enhancing the amplitude of the heating phase transition gravitational-wave signal. The efficiency, strength, and duration of the phase transitions will be similarly correlated in a reheating-dependent way.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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