Implications of the cosmic birefringence measurement for the axion dark matter search
Implications of the cosmic birefringence measurement for the axion dark matter search
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DOI：
10.1088/1475-7516/2022/09/062
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发表时间：
2021-08
影响因子：
6.4
通讯作者：
Ippei Obata
中科院分区：
文献类型：
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作者：
Ippei Obata
我们通过一个具有周期势的双轴对准机制的简单模型，证明了最近对暗能量引起的宇宙双折射效应的约束可能与轴子暗物质与光子耦合的约束有关。由于势的排列，两个场的一个线性组合提供了一个接近平坦的方向，作为暗能量，而另一个组合提供了一个陡峭的方向，作为暗物质。这个场景解决了已知的暗能量单场模型的概念问题，并预测了我们宇宙黑暗部分看似不同的约束之间的联系。
We show that a recent constraint on the cosmic birefringence effect due to dark energy can be related to the constraints on the coupling of axion dark matter to photon, by relying on a simple model of two-axion alignment mechanism with periodic potentials. Owing to the alignment of the potentials, one linear combination of two fields provides a nearly flat direction and acts as dark energy, whereas the other combination provides a steep direction and acts as dark matter. This scenario solves the known conceptual issues of one-field model for dark energy and predicts the connection between seemingly disparate constraints on the dark sectors of our universe.