论文标题
来自Efteraton衰减的轻暗物质
Light Dark Matter from Inflaton Decay
论文作者
论文摘要
我们提出了一种简单的暗暗物质（DM）生产的机制，从振荡的充气凝结的衰减中。如果通货膨胀后的加热温度高于充气质量（生产时DM动量的相同顺序，则与热等离子体的温度相比，如果DM的相互作用足够弱，则可以抑制DM动量。因此，DM可以足够冷以避免在温暖的DM上的观察限制，例如Lyman-$α$结合的，即使DM质量很小。我们分别考虑了刺激的发射和保利阻塞的作用，我们研究了来自充气剂衰减的骨气和费米克DM产生。在这两种情况下，DM都可以冷又丰富，足以成为DM的可行候选者。我们还将我们的机制应用于右撇子中微子的无轴轴DM和Dirac Sea DM的生产，这是活性中微子肿块的Seesaw关系。
We propose a simple mechanism of light dark matter (DM) production from the decay of the oscillating inflaton condensation. If the reheating temperature after inflation is higher than the inflaton mass, which is of the same order of the momentum of the DM at the time of the production, the DM momentum can be suppressed compared to the temperature of the thermal plasma if the interaction of the DM is weak enough. Consequently, the DM can be cold enough to avoid the observational constraints on the warm DM, like the Lyman-$α$ bound even if the DM mass is small. We study the bosonic and fermionic DM production from the inflaton decay, taking into account the effect of the stimulated emission and Pauli blocking, respectively. In both cases, the DM can be cold and abundant enough to be a viable candidate of the DM. We also apply our mechanism to the production of isocurvature-problem-free axion DM and Dirac sea DM of right-handed neutrino consistent the seesaw relation for the active neutrino masses.
