Valence states of O_2 Feynman's way

摘要

Potential energy curves for twelve valence states of O_2 are calculated with fully linked renormalized Feynman diagrams which dissociate properly. Compared with experiment, average errors of spectroscopic constants are: 18 kJ mol~(-1) for D_e, 2.1 pm for R_e, 81 cm~(-1) for ω_e, 15 kJ mol~(-1) for T_e, and 16 kJ mol~(-1) for the sum of asymptotic atomic excitation energies.