论文标题
同一硬币的两个侧面：无菌中微子和深色辐射。状态和观点
Two sides of the same coin: sterile neutrinos and dark radiation. Status and perspectives
论文作者
论文摘要
光无菌中微子的存在是粒子物理学的未解决问题之一。宇宙学的对应物由深色辐射表示，即除光子和标准（主动）中微子外，早期宇宙中存在的任何形式的辐射。这篇简短的评论提供了有关这两个问题及其联系的全面概述。我们回顾了中微子振荡异常的状态，评论了最新的振荡数据及其相互紧张局势，并讨论了其他陆地探针的约束。我们将宇宙学中光无菌中微子翻译为其他热相对论物种（由中微子振荡产生的附加热相对论物种）的缺点，我们详细介绍了替代溶液，特别关注中微子非标准相互作用，以及与哈勃恒定恒定问题的联系。导致深色辐射的新力的影响 - 黑暗部门的新物理学领域也讨论了暗物质相互作用。
The presence of light sterile neutrinos is one of the unanswered questions of particle physics. The cosmological counterpart is represented by dark radiation, i.e.\ any form of radiation present in the early Universe besides photons and standard (active) neutrinos. This short review provides a comprehensive overview of the two problems and of their connection. We review the status of neutrino oscillation anomalies, commenting on the most recent oscillation data and their mutual tensions, and we discuss the constraints from other terrestrial probes. We show the shortcomings of translating light sterile neutrinos in cosmology as additional thermalised relativistic species, produced by neutrino oscillations, and we detail alternative solutions, specifically focusing on neutrino non standard interactions, and on their link to the Hubble constant problem. The impact of a new force leading to dark radiation -- dark matter interactions is also discussed in the realm of new physics in the dark sector.
