Science and Education Publishing International Journal of Physics 2333-4886 2 2 2014 04 22 Neutrino Oscillations in Four-dimension Space 34 36 EN Hossein Rahbar Department of Physics, Faculty of science, Mazandaran University, Babolsar, Iran IJP2014222 10.12691/ijp-2-2-2 2014 03 16 2014 03 27 2014 04 22 Friedmann -Robertson- Walker (FRW) background used to study the oscillations of neutrino in four-dimension space. The Cauchy-Lorentz and Gaussian distribution in the base of this background used to obtain the probability of the neutrino oscillations. Finally, we pay attention to the case of associated incoherence damping coefficient of oscillation between flavors.