Effective chiral Lagrangians in QCD and the skyrmion
Andrianov V. A., Novozhilov V. Yu.
The self-effect of pseudoscalar mesons does not lead to the existence of locally stable solitons as nucleons. The mass of the chiral soliton which is stabilized when the interaction with vector ω and ρ mesons is taken into account is roughly twice the mass of a nucleon.