1 N(C) ROTATIONAL CORRECTIONS TO GA AND ISOVECTOR MAGNETIC-MOMENT OF THE NUCLEON/

The 1/N(c) rotational corrections to the axial vector constant and the isovector magnetic moment of the nucleon are studied in the Nambu-Jon a-Lasinio model. We follow a semiclassical quantization procedure in t erms of path integrals in which we can include perturbatively correcti ons in powers of angular velocity OMEGA approximately 1/N(c). We find non-zero 1/N(c) order corrections from both the valence and the Dirac sea quarks. These corrections are large enough to resolve the long-sta nding problem of a strong underestimation of both g(A) and mu(IV) in t he leading order. For the constituent quark mass of about 400 MeV the axial constant g(A) is well reproduced, whereas the isovector magnetic moment mu(IV) is still underestimated by 25 %.