论文标题
曲率引起的对称性破裂的原始暗物质
Primordial dark matter from curvature induced symmetry breaking
论文作者
论文摘要
我们证明，在通货膨胀期间重力引起的对称性破坏可以产生绝热的暗物质。我们研究了$ Z_2 $对称标量单元单元，仅通过重力将其耦合到其他字段，并且当非最小耦合$ξ$为负时，在通货膨胀期间的时空曲率破坏了对称性。我们发现，对称性破裂会导致绝热暗物质的形成，并且观察到的singlet质量$ m \ sim {\ rm mev} $和$ |ξ| \ sim 1 $。
We demonstrate that adiabatic dark matter can be generated by gravity induced symmetry breaking during inflation. We study a $Z_2$ symmetric scalar singlet that couples to other fields only through gravity and for which the symmetry is broken by the spacetime curvature during inflation when the non-minimal coupling $ξ$ is negative. We find that the symmetry breaking leads to the formation of adiabatic dark matter with the observed abundance for the singlet mass $m\sim{\rm MeV}$ and $|ξ|\sim 1$.
