@article{2e7ef7c6eafb429caf32f897c440322a,
title = "Correlated two-pion exchange and the elusive intermediate-range attraction in skyrme-type models",
abstract = "Using an S-matrix approach, we construct the static nucleon-nucleon potential based on the topological chiral soliton model of the nucleon. We show that from correlated two-pion exchange in the scalar-isoscalar channel one finds the missing intermediate range attraction in the nucleon-nucleon potential. We compare our approach to dispersion theoretical models and discuss possible improvements.",
author = "N. Kaiser and Mei{\ss}ner, {Ulf G.}",
note = "Funding Information: The Skyrme model \[1 \] and its extensions including vector mesons \[2 \] have proven to be a versatile tool in describing many aspects of low-energy hadron physics, like e.g. the properties of nucleons, pion-nucleon scattering or the nucleon-nucleon interaction. One of the problems which remains to be solved in a consistent fashion is the missing attraction in the iso-scalar central channel of the nucleon-nucleon (NN) interaction \[3 \]. In boson-exchange models, this central attraction is due to the exchange of light scalar mesons (the a-meson) \[4\] or correlated two-pion exchange in the I= 0, S= 0 channel \[5 \]. While there have been many approaches of coupling scalars or including local terms which act like scalar particles \[6 \], these ideas can give the missing attraction but they are unattractive for two reasons: First, the particle spectrum does not show a light scalar meson, and secondly, coupling of scalars very often tends to destabilize the soliton. It seems more appealing to construct correlated two-pion exchange in analogy with ~{"} This work is supported in part by funds provided by the US Department of Energy (DOE) under contract Nr. DE-AC02-76ER03069, and by Deutsche Forschungsgemeinschaft. Heisenberg fellow. Funding Information: N.K. acknowledges the kind hospitality and financial support of the Niels Bohr Institute.",
year = "1989",
month = dec,
day = "28",
doi = "10.1016/0370-2693(89)91340-3",
language = "English",
volume = "233",
pages = "457--460",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "Elsevier B.V.",
number = "3-4",
}