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arXiv 1904.04840hep-phastro-ph.CO
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修正混沌暴胀、非热暗物质和狄拉克中微子质量的共同起源

Common origin of modified chaotic inflation, non thermal dark matter and Dirac neutrino mass

Debasish Borah, Dibyendu Nanda, Abhijit Kumar Saha

备注：
25 pages, 5 figures, matches version accepted for publication in Phys. Rev. D
发表信息：
Phys. Rev. D 101, 075006 (2020)
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摘要：

我们提出了一个粒子物理标准模型的最小扩展，以适应宇宙暴胀，暗物质和轻中微子质量。虽然暴胀阶段是从修改后的混沌暴胀方案中获得的，与最新的宇宙学数据一致，但暗物质粒子是费米子单线态，在早期宇宙中仍然处于平衡状态。标量场通过适当的修改恢复了混沌膨胀的场景，也有助于产生暗物质与其母粒子的微小耦合，自然实现非热或冻结类型的暗物质场景。有趣的是，同样的辅助标量场也有助于实现微小的汤川耦合，这是从中微子耦合到标准模型（如希格斯场）产生亚电子伏狄拉克中微子质量所必需的。极小性以及为所有三个问题提供统一的解决方案，使模型在跨越所有边界的实验中保持预测性。

英文摘要：

We propose a minimal extension of the standard model of particle physics to accommodate cosmic inflation, dark matter and light neutrino masses. While the inflationary phase is obtained from a modified chaotic inflation scenario, consistent with latest cosmology data, the dark matter particle is a fermion singlet which remains out of equilibrium in the early universe. The scalar field which revives the chaotic inflation scenario by suitable modification also assists in generating tiny couplings of dark matter with its mother particle, naturally realizing the non-thermal or freeze-in type dark matter scenario. Interestingly, the same assisting scalar field also helps in realizing tiny Yukawa couplings required to generate sub-eV Dirac neutrino mass from neutrino couplings to the standard model like Higgs field. The minimality as well as providing a unified solution to all three problems keep the model predictive at experiments spanning out to all frontiers.

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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