论文标题
早期宇宙中的暗物质轴，温度升高
Dark Matter Axions in the Early Universe with a Period of Increasing Temperature
论文作者
论文摘要
在非标准的宇宙学历史上，我们考虑了通过未定标准的宇宙学历史涉及早期物质统治的情况下，通过具有时间依赖性衰减率的标量统治的情况下，考虑了轴突暗物质的产生。如果宇宙的温度经历了临时升高，则可以在轴突场的演化中恢复哈勃摩擦，从而导致最多三个轴突质量的“交叉”和哈勃膨胀率。这具有将未对准机制动态重置为新的初始状态的效果，以进行第二个不同的振荡阶段。当前暗物质遗物密度所需的轴突质量永远不会比标准历史的窗口大，并且可以通过三个以上的数量级较小，可以通过即将进行的实验来探测，例如Abracadabra，Klash，Klash，Admx，Madmax，Madmax和Organ，并靶向Axion-Photon-Photon-Photon-Photon-Photon-Photon耦合。这突出了大爆炸核合成之前探索宇宙学历史的可能性，这是通过在标准窗口以外的轴线暗物质的搜索。
We consider the production of axion dark matter through the misalignment mechanism in the context of a nonstandard cosmological history involving early matter domination by a scalar field with a time-dependent decay rate. In cases where the temperature of the Universe experiences a temporary period of increase, Hubble friction can be restored in the evolution of the axion field, resulting in the possibility of up to three "crossings" of the axion mass and the Hubble expansion rate. This has the effect of dynamically resetting the misalignment mechanism to a new initial state for a second distinct phase of oscillation. The resultant axion mass required for the present dark matter relic density is never bigger than the standard-history window and can be smaller by more than three orders of magnitude, which can be probed by upcoming experiments such as ABRACADABRA, KLASH, ADMX, MADMAX, and ORGAN, targeting the axion-photon coupling. This highlights the possibility of exploring the cosmological history prior to Big Bang Nucleosynthesis through searches for axion dark matter beyond the standard window.
