Dirac和Majorana费米子在空间平坦FRW时空背景下挠率场中的散射

Dirac and Majorana neutrino scattering by cosmic torsion in spatial-flat FRW'spacetime background

讨论了在空间平坦FRW(Friedmann-Robertson-Walker)时空背景下,通过有质量宇宙学中微子能量分布的移动检验由大尺度Lorentz破缺产生的宇宙学挠率存在的可能性.在空间平坦FRW时空背景下,有质量的宇宙学中,微子在宇宙学挠率场中的散射会导致其末态能量分布的峰值位置相比于无挠情况时有一个m^(2)/E^(2)量级的移动;并且,在非最小矢量挠率耦合的情况下,对于Dirac中微子和Majoran中微子移动的数值由于矢量挠率的影响而不同.

The possibility of detecting cosmic torsion originated from large scale Lorentz violation of cosmology at cosmic scale by the shift of energy distribution for massive cosmic neutrinos in spatial-flat FRW(Friedmann-Robertson-Walker)spacetime background is discussed.Massive cosmic neutrino scattering owing to cosmic torsion leads to a shift in the peak position of their final state energy distribution at the order of m^(2)/E^(2).Moreover,the Dirac and Majorana neutrino shift values differ by the vector part of the torsion in the non-minimal vector torsion coupling case.