Pion-photon exchange nucleon-nucleon potentials

Equivalence of Nonstatic Two-Pion-Exchange Nucleon-Nucleon Potentials

Off-shell aspects of the one-pion-exchange potential and their relationship to different forms of the nonstatic (subleading-order) chiral two-pion-exchange nucleon-nucleon potential are discussed. Various types of off-shell behavior are categorized and numerous examples are given. Recently derived potentials based on chiral approaches are supplemented by a rather general form of the two-pion-ex...

- th / 0 60 10 99 v 1 3 1 Ja n 20 06 Pion - photon exchange nucleon - nucleon potentials

We calculate in chiral perturbation theory the dominant next-to-leading order correction to the πγ-exchange NN-potential proportional to the large isovector magnetic moment κ v = 4.7 of the nucleon. The corresponding spin-spin and tensor potentials V S,T (r) in coordinate space have a very simple analytical form. At long distances r ≃ 2 fm these potentials are of similar size (but opposite in s...

Minimally Nonlocal Nucleon-Nucleon Potentials With Chiral Two-Pion Exchange Including Δ Resonances

Parity-violating two-pion exchange nucleon-nucleon interaction

We calculate in chiral perturbation theory the parity-violating two-pion exchange nucleon-nucleon potentials at leading one-loop order. At a distance of r = m−1 π ≃ 1.4 fm they amount to about ±16% of the parity-violating 1π-exchange potential. We evaluate also the parity-violating effects arising from 2π-exchange with excitation of virtual ∆(1232)-isobars. These come out to be relatively small...

Nucleon–nucleon and Pion–nucleon Potentials from Phase Shifts Using Quantum Inversion

NN and πN partial wave radial potentials have been generated using the latest SM94–VPI(NN) and FA93–VPI(πN) phase shifts. The potentials are used to determine the deuteron properties and to compute the H and He binding energies. The ε1 mixing angles of SM94–VPI and NY93–Nijmegen differ significantly and inversion potentials yield a Pd of 6.37% and 5.78%, respectively. Under–binding of H and He ...