论文标题
一阶相变的轴线暗物质，以及GRB 221009a的非常高的能量光子
Axion dark matter from first-order phase transition, and very high energy photons from GRB 221009A
论文作者
论文摘要
我们研究了轴突样粒子（ALP），该粒子（ALP）在其质量或潜在的最小值方面经历了一阶相变。如果ALP从SU（$ n $）仪表理论的非扰动效应中获得潜力，该理论是通过一阶相变限制的，或者如果在高温下将ALP捕获在虚假的真空中，直到它开始在真实的最小值上振动为止。与标准的未对准机制相比，所得的ALP丰度显着增强，这在更广泛的参数空间中解释了实验可访问的较宽参数空间中的暗物质。 Iaxo，Alps-II和DM-Radio。 Furthermore, the viable parameter space includes a region of the mass $m_a \simeq 10^{-7} - 10^{-8}$ eV and the ALP-photon coupling $g_{a γγ} \simeq 10^{-11} {\rm GeV}^{-1}$ that can explain the recent observation of very high energy photons from GRB221009A通过轴 - 光子振荡。参数区域表明，FOPT可以生成解释纳米格拉夫提示的重力波。如果该区域的ALP解释了暗物质，则ALP可能会经历一阶相变。
We study an axion-like particle (ALP) that experiences the first-order phase transition with respect to its mass or potential minimum. This can be realized if the ALP obtains a potential from non-perturbative effects of SU($N$) gauge theory that is confined via the first-order phase transition, or if the ALP is trapped in a false vacuum at high temperatures until it starts to oscillate about the true minimum. The resulting ALP abundance is significantly enhanced compared to the standard misalignment mechanism, explaining dark matter in a broader parameter space that is accessible to experiments e.g. IAXO, ALPS-II, and DM-radio. Furthermore, the viable parameter space includes a region of the mass $m_a \simeq 10^{-7} - 10^{-8}$ eV and the ALP-photon coupling $g_{a γγ} \simeq 10^{-11} {\rm GeV}^{-1}$ that can explain the recent observation of very high energy photons from GRB221009A via axion-photon oscillations. The parameter region suggests that the FOPT can generate the gravitational wave that explains the NANOGrav hint. If the ALP in this region explains dark matter, then the ALP has likely experienced a first-order phase transition.
