论文标题
原始黑洞在原始磁场中诱导随机轴突振荡
Primordial black holes induced stochastic axion-photon oscillations in primordial magnetic field
论文作者
论文摘要
由于密度较大，可以在早期的宇宙中产生原始的黑洞（PBH）。 PBHS可以非热产生轴突样颗粒（ALP）的宇宙背景。 In this paper, we investigate the ALPs emitted by ultra-light PBHs with the mass range $10 \, {\rm g} \lesssim M_{\rm PBH} \lesssim 10^9 \, \rm g$, in which PBHs would have completely evaporated before the start of Big Bang Nucleosynthesis (BBN) and can therefore not be directly constrained.在这种情况下，假设阿尔卑斯山只能与光子相互作用的最小情况。我们详细研究了宇宙磁场中阿尔卑斯山和光子之间的随机振荡。原始磁场（PMF）可以建模为具有宇宙等离子体的完全非均匀成分的随机背景场模型。使用PMF上的最新严格限制，我们显示了具有同质和随机磁场场景的ALP-Photon振荡概率分布的数值结果。 PMF中PBH诱导的随机ALP-PHOTON振荡可能会对某些进一步的现象产生影响，例如宇宙微波背景（CMB），宇宙X射线背景（CXB）和外部乳酸外gamma-ray背景（EGB）。
Primordial black holes (PBHs) can be produced in the very early Universe due to the large density fluctuations. The cosmic background of axion-like particles (ALPs) could be non-thermally generated by PBHs. In this paper, we investigate the ALPs emitted by ultra-light PBHs with the mass range $10 \, {\rm g} \lesssim M_{\rm PBH} \lesssim 10^9 \, \rm g$, in which PBHs would have completely evaporated before the start of Big Bang Nucleosynthesis (BBN) and can therefore not be directly constrained. In this case, the minimal scenario that ALPs could interact only with photons is supposed. We study the stochastic oscillations between the ALPs and photons in the cosmic magnetic field in detail. The primordial magnetic field (PMF) can be modelled as the stochastic background field model with the completely non-homogeneous component of the cosmic plasma. Using the latest stringent limits on PMF, we show the numerical results of ALP-photon oscillation probability distributions with the homogeneous and stochastic magnetic field scenarios. The PBH-induced stochastic ALP-photon oscillations in the PMF may have the effects on some further phenomena, such as the cosmic microwave background (CMB), the cosmic X-ray background (CXB), and the extragalactic gamma-ray background (EGB).
