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arXiv 2104.02077hep-phastro-ph.CO
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从轴子转动研究引力波和暗光子暗物质

Gravitational Waves and Dark Photon Dark Matter from Axion Rotations

Raymond T. Co, Keisuke Harigaya, Aaron Pierce

摘要:

在早期宇宙中,一个在场空间中旋转的轴子可以通过快子不稳定性产生暗光子。这种爆炸性粒子的产生创造了随机引力波的背景,可以在脉冲星定时阵列或其他引力波探测器上看到。这种情况为暗光子暗物质提供了一个新的历史。暗光子可能是温暖的,在未来的21厘米线调查中可以检测到。对于一个相容的宇宙学,包含轴子的复场的径向方向必须是热化的。我们详细探讨了一个具体的热化机制,并演示了这种设置可以负责所观察到的重子不对称性的产生。

英文摘要:

An axion rotating in field space can produce dark photons in the early universe via tachyonic instability. This explosive particle production creates a background of stochastic gravitational waves that may be visible at pulsar timing arrays or other gravitational wave detectors. This scenario provides a novel history for dark photon dark matter. The dark photons may be warm at a level detectable in future 21-cm line surveys. For a consistent cosmology, the radial direction of the complex field containing the axion must be thermalized. We explore a concrete thermalization mechanism in detail and also demonstrate how this setup can be responsible for the generation of the observed baryon asymmetry.

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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