English

The new mechanism for intermediate- and short-range nucleon-nucleon interaction

Nuclear Theory 2008-11-26 v2

Abstract

Arguments against the traditional Yukawa-type approach to NNNN intermediate- and short-range interaction due to scalar-isoscalar meson exchange are presented. Instead of the Yukawa mechanism for intermediate-range attraction some new approach based on formation of the symmetric six-quark bag in the state (0s)6[6]X,L=0>|(0s)^6[6]_X,L=0> dressed due to strong coupling to π\pi, σ\sigma and ρ\rho fields are suggested. These new mechanism offers a strong intermediate-range attraction which replaces the effective σ\sigma-exchange (or excitation of two isobars in the intermediate state) in traditional force models. A similar mechanism with vector ρ\rho-meson production in the intermediate six-quark state is expected to lead to a strong short-range spin-orbital nonlocal interaction in the NNNN system, which may resolve the long-standing puzzle of the spin-orbit force in baryons and in two-baryon systems. Illustrative examples are developed which demonstrate clearly how well the suggested new model can reproduce NNNN data. Strong interrelations have been shown to exist between the proposed microscopic model and the one-component Moscow NNNN potential developed by the authors previously and also with some hybrid models and the one-term separable Tabakin potential. The new implications of the proposed model for nuclear physics are discussed.

Keywords

Cite

@article{arxiv.nucl-th/9912074,
  title  = {The new mechanism for intermediate- and short-range nucleon-nucleon interaction},
  author = {Amand Faessler and Vladimir I. Kukulin and I. T. Obukhovsky and V. N. Pomerantsev},
  journal= {arXiv preprint arXiv:nucl-th/9912074},
  year   = {2008}
}

Comments

56 pages, 10 Postscript figures, corrected formulas and figures