In the linear sigma model and in the chromodielectric model, it is shown how the pion cloud enhances the electric polarizability, the electroexcitation of the ∆ and the axial form factor, and how it reduces the magnetic polarizability.U linearnom sigma modelu i u kromodielektričnom modelu se pokazuje kako pionski oblak povećava električnu polarizivnost, elektrouzbudu ∆ i aksijalni faktor oblika, te kako smanjuje magnetsku polarizivnost
