Pion dressing of nucleons and nuclear forces: Nonperturbative approach

We develop a nonperturbative method for obtaining pion dressing for strong interaction through minimization of total energy. As an illustration, using coherent states we consider the pion-nucleon system with the physical nucleon represented by the bare nucleon and a calculable meson cloud. We next extend the method to obtain pion dressing for the two nucleon system with deuteron as an example. The analysis de facto replaces the scalar-isoscalar potential in nuclear physics by multipion condensates and yields approximately correct results.