论文标题
在SIMP暗物质方案中的一步一阶相变和重力波
Single-step first order phase transition and gravitational waves in a SIMP dark matter scenario
论文作者
论文摘要
我们研究了通过自我相互作用的子gev暗物质场景冻结的非零温度动力学。作为一个原型，我们接受了标量暗物质物种的情况，经历了$ 3 \ 2 $数的数字改变由另一个标量镇定的灭绝。我们研究了观察到的遗物丰度，研究了该方案的热电位的形状。一个分析揭示了在亚GEV温度下发生气泡成核的一阶相变的可能性。该发现可以与框架中典型的子GEV质量相关。随后计算了与这种相变相关的引力波谱。
We investigate the non-zero temperature dynamics of a sub-GeV dark matter scenario freezing-out via self-interactions. As a prototype, we take up the case of a scalar dark matter species undergoing $3 \to 2$ number changing annihilations catalysed by another scalar. We study the shape of the thermal potential of this scenario in a parameter region accounting for the observed relic abundance. An analysis reveals the possibility of a first order phase transition with bubble nucleation occurring at sub-GeV temperatures. This finding can be correlated with the typical sub-GeV masses in the framework. The gravitational wave spectra associated with such a phase transition is subsequently computed.
