论文标题
动态peccei-quinn量表的轴支丰度改变
Altered Axion Abundance from a Dynamical Peccei-Quinn Scale
论文作者
论文摘要
我们构建了一个模型，其中由于存在新的光标量表，轴向的遗物丰度从标准的未对准机制增加或减少了，该模型会增加或减少。光标量表使有效的PQ对称性尺度动力学动力学，从而改变了轴轴的早期动力学并影响其后期的暗物质丰度。我们在半分析和数字上分析了这种新机制，表明与标准处理相比，我们可以容纳更轻或更重的轴突暗物质。我们讨论该模型对斧头搜索和基本物理学的含义。
We build a model in which the relic abundance of axions is altered from the standard misalignment mechanism, either increased or decreased, due to the presence of a new light scalar that couples to the radial part of the Peccei-Quinn (PQ) field. The light scalar makes the effective PQ symmetry-breaking scale dynamical, altering the early-time dynamics for the axion and affecting its late-time dark matter abundance. We analyze this new mechanism semianalytically and numerically, showing that we can accommodate both lighter or heavier axion dark matter, compared to the standard treatments. We discuss implications of the model for axion searches and fundamental physics.
