论文标题
带有两个成分fibd暗物质的一阶相变的重力波排放
Gravitational Wave Emissions from First Order Phase Transitions with Two Component FIMP Dark Matter
论文作者
论文摘要
我们从强大的一阶ekectroweak相变中探索引力波（GWS）的排放。为此，已经研究了一个暗物质模型，以微弱的相互作用的巨大粒子（FISP）方案进行了研究，其中暗物质颗粒是通过早期宇宙中的“冻结”机制产生的，并且由于它们的非常小的耦合，它们无法与宇宙的热等化层达到热和化学平衡。在这种情况下，我们通过两个附加标量单元将标准模型的标准模型扩展到标准模型，它们的稳定性受到不间断的离散$ z_2 \ times z'2 $对称性的保护，并且假定它们在自发对称性破裂后不发展VEV。我们研究本模型框架内的一阶相变。我们已经进行了分析和数值计算来计算随后的GWS产生，然后在未来的基于太空的探测器（例如Lisa，BBO，Alia，Alia，Decigo，Aligo和Aligo+等）中研究了此类GWS的检测能力。我们也发现，暗黑物质自我伴侣对现有场景的影响有很大的影响。
We explore the emissions of the Gravitational Waves (GWs) from a strong first-order ekectroweak phase transition. To this end, a dark matter model has been investigated in Feebly Interacting Massive Particle (FIMP) scenario, where the dark matter particles are produced through "freeze-in" mechanism in the early Universe and due to their very small couplings they could not attain thermal and chemical equilibrium with the Universe's thermal plasma. In this context, we extend scalar sector of Standard Model of particle physics by two additional scalar singlets whose stability is protected by an unbroken discrete $Z_2 \times Z'_2$ symmetry and they are assumed to develop no VEV after spontaneous symmetry breaking. We study the first-order phase transition within the framework of this present model. We have done both analytical and numerical computations to calculate the consequent production of GWs and then the detectabilities of such GWs have been investigated at the future space based detectors such as LISA, BBO, ALIA, DECIGO, aLIGO and aLIGO+ etc. We also find that dark matter self coupling has a considerable influence on the GW production in the present scenario.
