论文标题
通过光子 - 格拉维顿转换的原始磁场引力波
Gravitational Waves from Primordial Magnetic Fields via Photon-Graviton Conversion
论文作者
论文摘要
我们在早期宇宙中探索了一个新的过程，其中在存在强原始磁场的情况下，热化光子被转化为重力。发现生成的引力波（GWS）的频率通常为GHz的顺序，它们的幅度可以高达$ω__\ MATHRM {GW} H^2 \ sim 10^{ - 10} $。如果通过技术的未来发展来探索该频率区域，则产生的随机GW背景使我们能够知道何时以及如何产生原始磁场。从GWS的峰值频率来看，我们还可以探测当时的相对论自由度的数量。
We explore a novel process in the early Universe in which thermalized photons are converted into gravitons in the presence of strong primordial magnetic fields. It is found that the frequency of generated gravitational waves (GWs) is typically of order of GHz and their amplitude can be up to $ Ω_\mathrm{GW}h^2 \sim 10^{-10}$. If detected with future developments of the technology to explore this frequency region, the produced stochastic GW background enables us to know when and how strong the primordial magnetic fields are generated. From the peak frequency of the GWs, we can also probe the number of relativistic degrees of freedom at that time.
