(1) Department of Art and Science, Dalian Railway Institute, 116028 Dalian, P R China;(2) Department of Physics, Jilin University, 130023 Changchun, P R China
Abstract:
TFD (Thomas_Fermi_Dirac) equation in quantum mechanics is established. The existence theorems of the solutions are obtained by singular boundary value problem theory of ordinary differential equation and upper and lower solution method.