Sterile neutrinos and the matter-antimatter asymmetry of the universe ((05) N06)

宇宙物质-反物质不对称性的起源是物理学中最耐人寻味的悬而未决的问题之一。由于它们的相互作用强度很小，稀有的右手中微子可能是通过瘦身发生机制在早期宇宙中产生不对称所必需的非平衡条件的原因。在这个项目中，我们将开发基于非平衡场理论的方法来预测不对称性，将这些方法应用到特定的模型中，并研究唯象结果。通过这种方式，我们将补充在该研究中心内进行的中微子部门的实验和其他理论研究。

The origin of the matter-antimatter asymmetry of the universe is among the most intriguing unresolved questions in physics. Due to their small interaction strength, sterile right-handed neutrinos may be responsible for the out-of-equilibrium conditions that are necessary in order to generate an asymmetry in the early universe through the mechanism of leptogenesis. In this project, we will develop methods based on non-equilibrium field theory to predict the asymmetry, apply these to specific models and investigate the phenomenological consequences. In this way we will complement the experimental and the other theoretical investigations of the neutrino sector pursued within this CRC.