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arXiv 0806.0293astro-phgr-qchep-ph
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相变中引力波的可探测性

Detectability of Gravitational Waves from Phase Transitions

Tina Kahniashvili, Arthur Kosowsky, Grigol Gogoberidze, Yurii Maravin

摘要:

引力波可能代表了我们对宇宙年龄不到一秒的唯一直接探测。特别是,早期宇宙中的一阶相变可以产生一个随机背景的引力波,这可能是今天检测。我们简要地总结了引力辐射相变的物理来源,并提出了半解析表达式所产生的引力波光谱从三个不同的现实来源:气泡碰撞,湍流等离子体运动,和逆级联螺旋磁流体动力学湍流。利用唯象参数描述相变性质,确定了激光干涉空间天线探测引力波的参数空间范围。电弱相变在很宽的参数范围内都是可检测的。

英文摘要:

Gravitational waves potentially represent our only direct probe of the universe when it was less than one second old. In particular, first-order phase transitions in the early universe can generate a stochastic background of gravitational waves which may be detectable today. We briefly summarize the physical sources of gravitational radiation from phase transitions and present semi-analytic expressions for the resulting gravitational wave spectra from three distinct realistic sources: bubble collisions, turbulent plasma motions, and inverse-cascade helical magnetohydrodynamic turbulence. Using phenomenological parameters to describe phase transition properties, we determine the region of parameter space for which gravitational waves can be detected by the proposed Laser Interferometer Space Antenna. The electroweak phase transition is detectable for a wide range of parameters.

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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