中微子振荡中的几何相位和CP违反

The Geometric Phase and CP-Violation in Neutrino Oscillation

该文首先探讨了模型化的中微子在物质中振荡和混合的分析解,然后让中微子的CP违反相位旋转360°获得中微子振荡和混合的几何相位,发现几何相位随能量的振动具有非对称性几何结构.几何相位是描述中微子传播过程中内禀属性,故这种非对称结构起源于中微子振荡和混合的CP违反现象.因此,几何相位为中微子传播过程中的CP违反现象提供了线索.

Firstly,the analytical solution for a model of neutrino oscillation and mixing in the matter is explored.Then,the CP-violation phase of the neutrino is operated to rotate a circle in order to obtain the geometric phase of the neutrino oscillation and mixing.It is found that the geometric phase with energy vibration has asymmetric geometric structure,where the wave peaks and dips are not symmetry.Because the geometric phase describes the intrinsic properties of neutrino propagation process,this asymmetric structure originates from the neutrino oscillation and mixed CP-violation phenomenon.Therefore,the geometric phase provides clues to CP violations during neutrino propagation.