暗光子产生的宇宙双折射

IF 5.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of Cosmology and Astroparticle Physics Pub Date : 2024-08-22 DOI:10.1088/1475-7516/2024/08/037

Sung Mook Lee, Dong Woo Kang, Jinn-Ouk Gong, Donghui Jeong, Dong-Won Jung and Seong Chan Park

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引用次数: 0

摘要

我们研究了宇宙微波背景（CMB）光子与双折射暗光子之间的动力学混合。这些双折射暗光子可能存在于违反奇偶性的暗扇区，例如，通过与轴子场的耦合。我们的研究表明，暗光子的双折射会传播到CMB光子，但由此产生的双折射在天空中可能不是各向同性的，而一般会是各向异性的。此外，我们的研究还揭示了动力学混合在产生 CMB 的两个基本特征--圆偏振和光谱畸变--中的重要作用。

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Cosmic birefringence by dark photon

We study the kinetic mixing between the cosmic microwave background (CMB) photon and the birefringent dark photon. These birefringent dark photon may exist in parity-violating dark sector, for example, through the coupling to axion field. We show that the birefringence of the dark photon propagates to the CMB photon, but the resulting birefringence may not be isotropic over the sky, but will be anisotropic in general. Moreover, our investigation sheds light on the essential role played by kinetic mixing in the generation of two fundamental characteristics of the CMB: circular polarization and spectral distortion.

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来源期刊

Journal of Cosmology and Astroparticle Physics 地学天文-天文与天体物理

CiteScore

10.20

自引率

23.40%

发文量

632

审稿时长

1 months

期刊介绍： Journal of Cosmology and Astroparticle Physics (JCAP) encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal covers the latest developments in the theory of all fundamental interactions and their cosmological implications (e.g. M-theory and cosmology, brane cosmology). JCAP''s coverage also includes topics such as formation, dynamics and clustering of galaxies, pre-galactic star formation, x-ray astronomy, radio astronomy, gravitational lensing, active galactic nuclei, intergalactic and interstellar matter.