ELECTROMAGNETIC STRUCTURE OF THE SOLITON IN THE SU(3) NAMBU-JONA-LASINIO MODEL

The electromagnetic form factors of the soliton are derived with the one-quark loop approximation in the semi-bosonized SU(3) Nambu-Jona-Lasinio model in the collective formulation. Compared to the SU(2), there are anomalous currents which are finite and are not regularized due to the imaginary part of the Euclidean effective action in addition to the usual currents which are regularized. We evaluate the magnetic moment for the octet baryons and find that the model without the boson loop and the vector mesons predicts low values generally. Also, relevant problems are discussed.