Logarithmic effects in quantum electrodynamics under low energies

Abstract

Connected states (positronium, muonium, hydrogen, heavy mu-mesonic atoms) are considered in the paper aiming at the development of effective calculation methods for quantum electrodynamic corrections, containing logarithmical gain factors. As a result insertions of the vacuum polarization into multipole moments of nuclei have been calculated exactly on z_ _a_l_p_h_a_ parameter. The calculation method for logarithmic corrections in atomic systems has been suggested. The new theoretical value of the positrinium: G=7,990 (1)x10"9s"-"1 has been found; corrections relatively to alpha "4ln alpha sorder to transfer frequences in positronium have been calculatedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio