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arXiv 2108.02150astro-ph.COhep-phhep-th
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宇宙双折射测量对轴子暗物质研究的启示

Implications of the Cosmic Birefringence Measurement for the Axion Dark Matter Search

Ippei Obata

摘要:

我们表明,最近的宇宙双折射效应的约束,由于暗能量可以与约束的耦合的轴子暗物质的光子,依靠一个简单的模型的两个轴子对齐机制与周期性的潜力。由于电势的排列,两个场的一个线性组合提供了一个几乎平坦的方向,并作为暗能量,而另一个组合提供了一个陡峭的方向,并作为暗物质。这个方案解决了已知的暗能量单场模型的概念问题,并预测了我们宇宙暗区上看似不同的约束之间的联系。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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