The deformation of the interacting nucleon in the Skyrme model
  Changes in the nucleon shape are investigated by letting the nucleon deform under the strong interactions with another nucleon. The parameters of the axial deformations are obtained by minimizing the static energy of the two nucleon system at each internucleon distance $ R $. It is shown that the intrinsic quadrupole moment of the interacting proton, $Q_{p}$, is about $0.02 fm^2$ at distances near $R \sim 1.25 $ fm. 
A. Rahimov, T. Okazaki, M.M. Musakhanov, F.C. Khanna