Thermodynamic properties of the SU(2)f chiral quark–loop soliton |
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| Authors: | M Schleif R Wünsch |
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| Institution: | (1) Institut für Kern- und Hadronenphysik, Forschungszentrum Rossendorf e.V., Postfach 510119, D-01314 Dresden, Germany, DE |
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| Abstract: | 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 constituent quarks. Energy and radius of the soliton are
determined in self-consistent mean-field approximation. Quasi-classical corrections to the soliton energy are derived by means
of the pushing and cranking approaches. The corresponding inertial parameters are evaluated. It is shown that the inertial
mass is equivalent to the total internal energy of the soliton. Corrected nucleon and δ isobar masses are calculated in dependence
on temperature and density of the medium. As a result of the self-consistently determined internal structure of the soliton
the scaling between constituent quark mass, soliton mass and radius is noticeably disturbed.
Received: 26 September 1997 |
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| Keywords: | PACS:12 39 Fe Chiral Lagrangians – 12 38 Lg Other nonperturbative calculations – 12 40 Yx Hadron mass models and calculations – 24 85 +p Quarks gluons and QCD in nuclei and nuclear processes |
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