Quasipotential in the Fourth Order of Perturbation Theory. Unequal mass case

Natalia A. Boikova, Valeri V. Dvoeglazov, Yuri N. Tyukhtyaev +1

The quasipotential in the fourth order of perturbation theory is calculated in the Coulomb gauge for the unequal mass particles. It could be used for the future calculations of ene…