Sterile neutrino altered dispersion relations in particle physics, astrophysics and cosmology

目前正在结合中微子部门和宇宙学中的各种反常现象来讨论稀有中微子的存在。然而，所提出的模型经常相互冲突和/或与其他实验数据相冲突。在提出的研究项目中，计划研究这些新粒子的非标准性质是否能够改善或解决这些矛盾。在此，我们将重点放在连接粒子能量和动量的通常色散关系中的新项。这种色散关系的改变可能是由于物质效应、洛伦兹不变性破坏、气候触发的质量变化以及在额外维度的光谱时间中的传播造成的。

The existence of sterile neutrinos is presently being discussed in connection with various anomalies in the neutrino sector and in cosmology. The models proposed are however often in conflict with each other and/or with other experimental data. In the research project proposed it is planned to study whether non-standard properties of these new particles can ameliorate or solve these contradictions. We focus hereby on new terms in the usual dispersion relation connecting a particle's energy and momentum. Such altered dispersion relations can occur due to matter effects, Lorentz invariance violation, comological triggered mass variations as well as the propagation in extra dimensions of specetime.