Rotational Corrections to Axial Currents in Semibosonized SU(3) Nambu--Jona-Lasinio Model
Abstract
We examine O(1/) rotational corrections to axial couplings ~ and ~ in the framework of the semibosonized SU(3) Nambu--Jona-Lasinio model. A novelty is due to the observation that the rotational (cranking) velocity and the rotation matrix itself do not commute within semiclassical quantization scheme. If time ordering in the quark loop is maintained new contributions, which have no analogue in the Skyrme model, appear. They substantially improve numerical results for the axial couplings which without the present corrections are badly underestimated.
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