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arXiv 2607.00528hep-phastro-ph.COhep-th
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有限模科尔曼-温伯格暴胀

Finite modular Coleman-Weinberg inflation

Keio University(庆应义塾大学);Keio University Sustainable Quantum Artificial Intelligence Center (KSQAIC), Keio University(庆应义塾大学可持续量子人工智能中心);Quantum Computing Center, Keio University(庆应义塾大学量子计算中心);Department of Physics, Keio University(庆应义塾大学物理系);Waseda University(早稻田大学);Kumamoto Health Science University(熊本县立大学);Hokkaido University(北海道大学)

Yoshihiko Abe, Komei Goto, Tetsutaro Higaki, Junichiro Kawamura, Tatsuo Kobayashi

AI总结:

提出基于模形式的科尔曼-温伯格势的暴胀模型,以模场虚部为暴胀子,实部为轴子,解释宇宙观测并讨论再加热与轴子宇宙学。

摘要:

我们提出一个模对称暴胀模型,基于通过积分出与复模场τ通过模形式耦合的重矢量夸克而产生的科尔曼-温伯格势。在此框架中,模τ的虚部扮演暴胀子的角色,而实部被识别为重轴子。我们展示了该模型成功解释了当前的宇宙学观测。我们进一步讨论了通过模依赖的规范动能函数的再加热以及轴子的宇宙学。在暴胀子衰变后的再加热过程中,轴子振荡主导宇宙,然后在可行的参数区域内,它在太初核合成之前衰变。轴子的量子涨落可以达到暴胀子涨落的约1%量级,这将诱导可能在未来的观测中检测到的等曲率扰动。

英文摘要:

We propose a modular symmetric inflationary model based on a Coleman--Weinberg potential generated by integrating out heavy vector-like quarks that couple to the complex modulus field $τ$ through modular forms. In this framework, the imaginary part of modulus $τ$ plays the role of the inflaton, while the real part is identified with a heavy axion. We show that the model successfully explains the current cosmological observations. We further discuss reheating through modulus-dependent gauge kinetic functions and the cosmology of the axion. The axion oscillation dominates over the Universe after the reheating via inflaton decay, and then it decays before Big Bang Nucleosynthesis in the viable parameter region. The quantum fluctuation of the axion can be of order $\mathcal{O}(1)\% $ of that of the inflaton, which would induce isocurvature perturbations that may be detectable in future observations.

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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