Abstract
The nucleon-nucleon interaction arising from the exchange of three pions and the excitation of isobars in intermediate states is studied. Approximating the propagator by the inverse mass-splitting, analytical expressions are derived for the spectral functions of the isoscalar and isovector central, spin-spin, and tensor potentials in momentum-space. A translation of the spectral functions into coordinate-space potentials reveals that the main effect of these specific exchange and excitation mechanisms is a repulsive isoscalar central potential.
4 More- Received 20 April 2015
- Revised 11 May 2015
DOI:https://doi.org/10.1103/PhysRevC.92.024002
©2015 American Physical Society