论文标题
511来自一阶相变和原始黑洞的KEV银河系线
511 keV galactic line from first-order phase transitions and primordial black holes
论文作者
论文摘要
原始黑洞（PBH）的霍金蒸发，质量为$ 3 \ times 10^{ - 17} \ Lessim m _ {\ rm pbh}/m_ \ odot \ odot \ lisessim 7 \ lyssim 7 \ times 10^{ - 17} $ and bercimention $ 0.01 \ sims $ 0.01 \ sims $ sim $ sim $ sim $ 0.5从星系中心重现511 KEV伽马射线过量。在这项工作中，我们研究了PBHS基础在黑暗扇区中标量场的四分之一有效的热电位引起的一阶相变的生产机制。我们发现了用真空能，$ \ Mathcal {O}（1）\ Lesssim B^{1/4}/{\ rm Mev} \ Lessim \ Mathcal \ Mathcal {O}（100）$的相过渡。重力波和分层脉冲射线的相关签名分别在$μ$ ARES和AMEGO/E-ASTROGAM投影敏感性之内。
Hawking evaporation of primordial black hole (PBH), with mass $3\times 10^{-17} \lesssim M_{\rm PBH}/M_\odot \lesssim 7\times 10^{-17}$ and fractional abundance $0.01 \lesssim f_{\rm PBH} \lesssim 0.5$, well reproduces 511 keV gamma-ray excess from galaxy center. In this work, we investigated the production mechanism of PBHs base on the first-order phase transition induced by quartic effective thermal potential of a scalar field in dark sector. We found the phase transition with vacuum energy, $\mathcal{O}(1)\lesssim B^{1/4}/{\rm MeV} \lesssim \mathcal{O}(100)$, produces the desired PBH mass and abundance fraction. Correlated signatures of gravitational wave and extragalactic gamma-ray from phase transition and black hole evaporation, respectively, are within $μ$Ares and AMEGO/e-ASTROGAM projected sensitivities.
