论文标题
暗物质生产的重力错位机制
Gravitational misalignment mechanism of Dark Matter production
论文作者
论文摘要
我们认为暗物质由振荡的单线标量场组成。在质量项的基础上，标量配备了潜在的自发破坏Z_2对称性。这种潜力在早期占主导地位，并导致标量的时间依赖性期望值，从而减少了扩展的宇宙。随着它降至某些临界值以下，对称性将恢复，而暗物质场开始绕零振荡。我们排列自发对称性，突破标量与RICCI曲率的相互作用。这样，可以在很早的时候就可以生产超重的暗物质。根据其质量，生产发生在通货膨胀（非常大的统一量表），预热或以辐射为主的阶段（质量10^{6} -10 -10^{7} GEV）。
We consider Dark Matter composed of an oscillating singlet scalar field. On top of the mass term, the scalar is equipped with a potential spontaneously breaking Z_2-symmetry. This potential dominates at early times and leads to the time-dependent expectation value of the scalar, which decreases in the expanding Universe. As it drops below some critical value, the symmetry gets restored, and the Dark Matter field starts to oscillate around zero. We arrange the spontaneous symmetry breaking through the interaction of the scalar with the Ricci curvature. In that way, superheavy Dark Matter can be produced at very early times. Depending on its mass, the production takes place at inflation (very large masses up to the Grand Unification scale), at preheating, or at radiation-dominated stage (masses 10^{6}-10^{7} Gev).
