论文标题
隐形暗物质限制过渡和重力波
Stealth dark matter confinement transition and gravitational waves
论文作者
论文摘要
我们使用非扰动晶格计算来研究隐形暗物质的有限温度限制过渡，重点是这种早期宇宙过渡是一阶的制度，并会产生重力波的随机背景。 Stealth Dark Matter通过新的强耦合SU（4）轨距扇区扩展了标准模型，在基本表示中具有四个巨大的费米子，从而产生稳定的Spin-0“深色Baryon”作为可行的复合暗物质候选者。除了先前研究的直接检测和对撞机实验外，对随机重力波的未来搜索将提供一种发现或限制隐形暗物质的新方法。作为实现这一现象学的第一步，我们确定了为了产生一阶隐形暗物质限制过渡，深色费米子需要多么重。
We use non-perturbative lattice calculations to investigate the finite-temperature confinement transition of stealth dark matter, focusing on the regime in which this early-universe transition is first order and would generate a stochastic background of gravitational waves. Stealth dark matter extends the standard model with a new strongly coupled SU(4) gauge sector with four massive fermions in the fundamental representation, producing a stable spin-0 'dark baryon' as a viable composite dark matter candidate. Future searches for stochastic gravitational waves will provide a new way to discover or constrain stealth dark matter, in addition to previously investigated direct-detection and collider experiments. As a first step to enabling this phenomenology, we determine how heavy the dark fermions need to be in order to produce a first-order stealth dark matter confinement transition.
