The nucleon-nucleon interaction and properties of the nucleon in a πρω soliton model including a dilaton field with anomalous dimension
Ulf-G. Meissner, A. Rakhimov, U. Yakhshiev
Abstract
We investigate an extended chiral soliton model which includes π, ρ, ω and σ mesons as explicit degrees of freedom. The Lagrangian incorporates chiral symmetry and broken scale invariance. A scalar-isoscalar meson σ is associated with a quarkonium dilaton field with a mass ≈ 550 MeV. We show that the scalar field with anomalous dimension slightly changes the static and electromagnetic properties of the nucleon. In contrast, it plays a significant role in nucleon-nucleon dynamics and gives an opportunity to describe well the two-nucleon interaction.
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