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We consider a chiral one-loop hedgehog soliton of the bosonized SU(2)$_f$Nambu & Jona-Lasinio model which is embedded in a hot medium of constituentquarks. Energy and radius of the soliton are determined in self-consistentmean-field approximation. Quasi-classical corrections to the soliton energy arederived by means of the pushing and cranking approaches. The correspondinginertial parameters are evaluated. It is shown that the inertial mass isequivalent to the total internal energy of the soliton. Corrected nucleon and$\Delta$ isobar masses are calculated in dependence on temperature and densityof the medium. As a result of the self-consistently determined internalstructure of the soliton the scaling between constituent quark mass, solitonmass and radius is noticeably disturbed.Comment: 34 pages, 7 Postscript figures, uses psfig.st

Thermodynamic properties of the SU(2)f chiral quark–loop soliton