Transformation of a three-body interaction into a sum of pairwise potentials: Application to the quark-string-junction and the Urbana - potentials
Résumé
A transformation of a three-body potential into a sum of two-body potentials is derived. It is applied to the quark-string-junction potential, which becomes the sum of three linear potentials, and to the three-body part of the Urbana nuclear potential.