论文标题
Starobinsky通货膨胀中的紫外线冻结
UV Freeze-in in Starobinsky Inflation
论文作者
论文摘要
在Starobinsky的通货膨胀模型中，只有在非常狭窄的近似符合性的标量场和质量$ \ sim 10^7 $ gev的近乎符合性标量场和纺纱器中，才能从Aftraton场的直接衰减产生观察到的暗物质丰度。但是，在黑暗和可见扇区之间存在有效的不可分割的相互作用的情况下，这种频谱可以显着扩大。特别是，我们表明，紫外线冻结可以有效地产生正确的暗物质丰度，从keV到PEV量表和任意自旋的大量质量，而无需显着改变加热动力学。我们还考虑了有效相互作用对充气衰减对暗物质的贡献。
In the Starobinsky model of inflation, the observed dark matter abundance can be produced from the direct decay of the inflaton field only in a very narrow spectrum of close-to-conformal scalar fields and spinors of mass $\sim 10^7$ GeV. This spectrum can be, however, significantly broadened in the presence of effective non-renormalizable interactions between the dark and the visible sectors. In particular, we show that UV freeze-in can efficiently generate the right dark matter abundance for a large range of masses spanning from the keV to the PeV scale and arbitrary spin, without significantly altering the heating dynamics. We also consider the contribution of effective interactions to the inflaton decay into dark matter.
