论文标题
深色象征自发冻结
Dark-matter spontaneous freeze out
论文作者
论文摘要
我们认为，由于对称性在某些临界温度以下的对称性的自发破坏，热粒子颗粒会获得质量。我们描述了相变发作后不久发生冻结机制的机制，而深色质量的质量尚未达到其最终恒定值。为了使这种“自发的冻结”要产生正确的遗物密度，将暗物质an灭的当前时间横截面成标准模型状态必须比恒定的深色质量质量大于一个或两个数量级。
We consider the possibility that thermalized dark-matter particles acquire their mass thanks to the spontaneous breaking of a symmetry below some critical temperature. We describe the regime where a freeze out mechanism takes place shortly after the onset of the phase transition, while the dark-matter mass has not yet reached its final constant value. For such a "spontaneous freeze out" to yield the correct relic density, the present-time cross section of annihilation of the dark matter into Standard-Model states has to be one or two orders of magnitude larger than in the case of a constant dark-matter mass.
