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arXiv 1808.08968hep-phastro-ph.COhep-th
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用宇宙弦的引力波探测前BBN宇宙

Probing the pre-BBN universe with gravitational waves from cosmic strings

Yanou Cui, Marek Lewicki, David E. Morrissey, James D. Wells

摘要:

标准模型的许多有动机的扩展预言了宇宙弦的存在。源自宇宙弦网络动力学的引力波,有能力探测早期宇宙的许多无法探测的性质。在这项研究中,我们展示了如何从宇宙弦网络的引力波的频谱可以用来测试大爆炸核合成(BBN)之前的早期宇宙的状态方程。我们还证明,目前和计划中的引力波探测器,如LIGO,LISA,DECIGO/BBO和ET/CE,有可能探测到非标准的前BBN状态方程和早期宇宙演化的信号(例如,早期的非标准物质支配或动能支配)或在早期宇宙中活跃的新的自由度,其灵敏度超出了陆地对撞机实验和宇宙微波背景测量的灵敏度。

英文摘要:

Many motivated extensions of the Standard Model predict the existence of cosmic strings. Gravitational waves originating from the dynamics of the resulting cosmic string network have the ability to probe many otherwise inaccessible properties of the early universe. In this study we show how the spectrum of gravitational waves from a cosmic string network can be used to test the equation of state of the early universe prior to Big Bang Nucleosynthesis (BBN). We also demonstrate that current and planned gravitational wave detectors such as LIGO, LISA, DECIGO/BBO, and ET/CE have the potential to detect signals of a non-standard pre-BBN equation of state and evolution of the early universe (e.g., early non-standard matter domination or kination domination) or new degrees of freedom active in the early universe beyond the sensitivity of terrestrial collider experiments and cosmic microwave background measurements.

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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