论文标题
PNGB暗物质和通货膨胀的非热生产
Non-thermal Production of PNGB Dark Matter and Inflation
论文作者
论文摘要
伪Nambu-Goldstone玻色子（PNGB）是暗物质的自然候选者，因为它避免了严重的直接检测范围。我们在本文中表明，PNGB具有另一个不同且有趣的面孔，具有较高的对称性破坏量表。如此大的对称破坏是由标准模型以外的各种物理学动机。在这种情况下，由于Nambu-Goldstone的性质，PNGB相互作用被抑制，即使有足够大的门户耦合，冻结产量也无法正常工作。然后，我们通过微弱的Higgs门户耦合来研究PNGB的暗物质遗物丰度。此外，PNGB模型中的对称性破坏标量可能扮演着发电量的作用。充气和暗物质是在单个领域中统一的，而发电量的PNGB产生是不可避免的。对于这些非热中产生的PNGB暗物质和成功通货膨胀的遗物丰度，我们发现在加热温度的范围内，暗物质质量应小于几个GEV，并且质量应小。
A pseudo Nambu-Goldstone boson (pNGB) is a natural candidate of dark matter in that it avoids the severe direct detection bounds. We show in this paper that the pNGB has another different and interesting face with a higher symmetry breaking scale. Such large symmetry breaking is motivated by various physics beyond the standard model. In this case, the pNGB interaction is suppressed due to the Nambu-Goldstone property and the freeze-out production does not work even with sufficiently large portal coupling. We then study the pNGB dark matter relic abundance from the out-of-equilibrium production via feeble Higgs portal coupling. Further, a possibility is pursued the symmetry breaking scalar in the pNGB model plays the role of inflaton. The inflaton and dark matter are unified in a single field and the pNGB production from inflaton decay is inevitable. For these non-thermally produced relic abundance of pNGB dark matter and successful inflation, we find that the dark matter mass should be less than a few GeV in the wide range of the reheating temperature and the inflaton mass.
