论文标题
具有一阶宇宙学相变和重力波的隐藏自我互动的暗物质部门
A hidden self-interacting dark matter sector with first order cosmological phase transition and gravitational wave
论文作者
论文摘要
深色标量调解人可以轻松地实现自我相互作用的暗物质情景，并满足暗物质遗物密度的约束。当隐藏扇区与可见的扇形高度分离时，由该深色标量介体产生的一阶相变产生的引力波将是探测黑暗扇形物理学的重要签名。在这项工作中，研究了最简单的黑暗区域，其中有一个标量和一个Dirac Fermion。通用四分之一的有限温度电位用于诱导强的一级相变。对自相互作用的暗物质的联合分析，暗物质的遗物密度和一阶相变的遗物表明，暗标量的质量范围约为$（4 \ times 10^{ - 4} \ sim 3）〜\ rm gev $。对于暗物质，当隐藏扇区和可见扇区之间的温度比$ξ$大于0.1时，其质量范围约为$（10〜 \ rm mev \ sim 10〜 \ rm gev）$。产生的引力波的峰值频率为$（10^{ - 6} \ sim 10^{ - 3}）〜\ rm Hz $，对于温度比$ 0.1 <ξ<1 $，在将来的测量中可以检测到。
A dark scalar mediator can easily realize the self-interacting dark matter scenario and satisfy the constraint of the relic density of the dark matter. When the hidden sector is highly decoupled from the visible sector, the gravitational waves produced by the first order phase transition resulted from this dark scalar mediator will be an important signature to probe the dark sector physics. The simplest dark sector with one scalar and one Dirac fermion is studied in this work. A generic quartic finite-temperature potential is used to induce the strong first order phase transition. A joint analysis of the self-interacting dark matter, the relic density of the dark matter and the first order phase transition shows that the mass range of the dark scalar is about $(4\times 10^{-4} \sim 3)~\rm GeV$. For the dark matter, when the temperature ratio $ξ$ between the hidden sector and the visible sector is larger than 0.1, its mass range is about $(10~ \rm MeV\sim 10~ \rm GeV)$. The produced gravitational waves have a peak frequency of $(10^{-6}\sim 10^{-3}) ~\rm Hz$ for a temperature ratio $0.1<ξ<1$, which may be detectable in future measurements.
