论文标题
中微子在培养基中的分散
Dispersion of neutrinos in a medium
论文作者
论文摘要
我们在复杂的标量介质中分析了Weyl或Majora的分散关系，Dirac中微子通过Yukawa耦合与中微子相互作用。它们是通过代表不同物理情况的各种限制的扰动计算来求解的，其中一些允许中微子振荡发生。值得注意的是，在非相关性极限上，主要的零散关系在Majorana或Dirac中微子上产生不同。这为标量暗物质与中微子的宇宙学场景提供了不愉快的限制。目前，模型参数空间受到天体中微子观测的暗物质中微子散射的约束。
We analyze the dispersion relations of Weyl or Majorana, and Dirac neutrinos in a complex scalar medium which interacts with the neutrinos through Yukawa couplings. They are solved by perturbative calculation in various limits representing different physical situations, some of which allow the medium-induced neutrino oscillation to occur. Remarkably, peculiar dispersion relations arise differently for Majorana or Dirac neutrinos in the non-relativistic limit. This provides an unpleasant restriction on the cosmological scenario of a scalar dark matter coupling to neutrinos. At present, the model parameter space is constrained by the neutrino scattering with dark matter through astrophysical neutrino observations.
