论文标题
在重力预热上
On gravitational preheating
论文作者
论文摘要
我们考虑在充气振荡时期的暗物质产生。可以想象，暗物质与流动性之间的可重新分配相互作用可以忽略不计。在这种情况下，领导作用是由重力产生的较高维操作员扮演的，因此被普朗克量表抑制。我们专注于DIM-6操作员，并研究扰动和非扰动状态中的相应颗粒产生。我们发现，暗物质的生产率由非衍生运算符支配，涉及到足球场的较高功能。即使它们以小威尔逊系数出现，此类操作员也可以轻松解释正确的暗物质丰度。
We consider dark matter production during the inflaton oscillation epoch. It is conceivable that renormalizable interactions between dark matter and inflaton may be negligible. In this case, the leading role is played by higher dimensional operators generated by gravity and thus suppressed by the Planck scale. We focus on dim-6 operators and study the corresponding particle production in perturbative and non-perturbative regimes. We find that the dark matter production rate is dominated by non-derivative operators involving higher powers of the inflaton field. Even if they appear with small Wilson coefficients, such operators can readily account for the correct dark matter abundance.
