We investigate an extended chiral soliton model which includes $pi, rho, omega$ and $sigma $ mesons as explicit degrees of freedom. The Lagrangian incorporates chiral symmetry and broken scale invariance. A scalar-isoscalar meson $sigma$ is associated with a quarkonium dilaton field with a mass $msigapprox 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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