论文标题
Palatini的重力暗物质生产预热
Gravitational dark matter production in Palatini preheating
论文作者
论文摘要
在类似于希格斯膨胀的特殊情况下，我们研究了普遍相对论的帕拉蒂尼公式中高原通胀的预热。以前显示，振荡的充气场在该模型中反复返回高原，这导致了加速器颗粒的速度产生。我们表明，通过类似的机制可以更有效地产生一个最小的观众标量场。该机制纯粹是引力，标量场质量可以为$ 10^{13} $ GEV，比许多数量级大于哈勃尺度，这使得这是超高型暗物质的候选者。
We study preheating in plateau inflation in the Palatini formulation of general relativity, in a special case that resembles Higgs inflation. It was previously shown that the oscillating inflaton field returns to the plateau repeatedly in this model, and this leads to tachyonic production of inflaton particles. We show that a minimally coupled spectator scalar field can be produced even more efficiently by a similar mechanism. The mechanism is purely gravitational, and the scalar field mass can be of order $10^{13}$ GeV, larger than the Hubble scale by many orders of magnitude, making this a candidate for superheavy dark matter.
