Strangeness in the Skyrme and in Nambu-Jona Lasinio Models

Details Strangeness in the Skyrme and in Nambu-Jona Lasinio Models Strangeness in the Skyrme and in Nambu-Jona Lasinio Models

1992-11-19

arxiv.org/abs/hep-ph/9211278v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

(Talk at Siegen Workshop on Skyrmions, October 1992, to be published in the proceedings) 13 pages, LaTeX, psfig

Scientific paper

We discuss the phenomenology of SU(3) Skyrme and Nambu--Jona-Lasinio models. We show that while the Skyrme model, in its simplest version, is unable do reproduce the hyperon spectrum, the NJL model describes both hyperon and isospin splittings with satisfactory accuracy. The difference between the two models lies in new {\em anomalous} moments of inertia, which vanish in the Skyrme model and get non-zero contribution from the {\em valence} quarks in the NJL model

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