Interference Phase of Neutrino Oscillation in Schwarzschild-de Sitter Space-Time  

作　　者：任军 耿金鹏 

机构地区：[1]School of Science, Hebei University of Technology

出　　处：《Communications in Theoretical Physics》2010年第4期665-668,共4页理论物理通讯（英文版）

摘　　要：We study the mass neutrino interference phase in Schwarzschild-de Sitter space time along the null trajectory and the geodesic line and obtain the effects of cosmological constant A on the neutrino oscillation. Firstly, in the high energy limit, we find that the phase along the geodesic keeps the double of that along the null. Secondly, we calculate the phase on the condition that the cosmological constant, A, is a small quantity. The correction of the phase due to A is given. Finally, we calculate the proper oscillation length in Schwarzschild-de Sitter space-time, which increases because of the existence of A, compared with the result in Schwarzschild space-time. All of our results can be reduced to those in Schwarzschild space-time as A approaches to zero.

关 键 词：gravitational field Schwarzschild-de Sitter space time neutrino interference phase cosmological constant geodesic line 

分 类 号：O572.321[理学—粒子物理与原子核物理]