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arXiv 2409.07063gr-qcastro-ph.CO
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宇宙磁场中高频遗迹引力波向光子的转化

Conversion of high frequency relic gravitational waves into photons in cosmological magnetic field

L. A. Panasenko, A. O. Chetverikov

AI总结:

本研究延续前人工作,将FLRW宇宙中Gertsenshtein效应的微分方程组针对辐射主导期视界下的高频引力波简化并解析求解,发现1 nGs磁场下频率不低于10^-11Hz的遗迹引力波转化效应显著增强,并讨论了结果的模型依赖性。

摘要:

本工作延续了文献[1]中呈现的研究,该文献评估了Gertsenshtein效应(格申施泰因效应)对遗迹引力波谱长波部分的影响。本文将文献[1]推导的Friedman-LeMaitre-Robertson-Walker(弗里德曼-勒梅特-罗伯逊-沃尔克)宇宙中Gertsenshtein效应的微分方程组,针对辐射主导时期视界下区域的引力波进行了简化,随后对所得方程组进行了解析求解。通过对解的分析得出结论:当磁场强度约为1 nGs时,频率$k\gtrsim 10^{-11}$ Hz的遗迹引力波(GWs)的转化效应显著增强。此外,文章末尾还讨论了该结果的模型依赖性。

英文摘要:

This work continues the research presented in the article [1], where we estimate the Gertsenshtein effect's influence on the long-wavelength part of relic gravitational wave spectrum. Here, the differential equation system for the Gertsenshtein effect in Friedman-LeMaitre-Robertson-Walker universe, derived in [1], is simplified for gravitational waves in the under-horizon regime during radiation dominance epoch. Then, the obtained system is solved analytically. As a result of the solution analysis a conclusion was made about a significant increase of relic GWs with the frequencies $ k\gtrsim 10^{-11}$ Hz for magnetic field strength about 1 nGs. In addition, at the end of the article model dependency of the result is discussed

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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