Renormalization of the Pion Propagator and on the Particle-Hole in the Spin-Isospin Channel

摘要

The momentum behavior of the spin-isospin interaction was investigated. It is shown that in a model with meson exchange in presence of short range correlations the latter produce a natural cut-off of the interaction irrespective of form factor effects. This result is the equivalent for virtual particles of a theorem due to Beg on the scattering of real particles on a correlated medium. (ERA citation 09:024352)