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HK: Hadronen und Kerne

HK 42: Structure of Baryons, Mesons VI, Theory

HK 42.5: Talk

Tuesday, March 17, 1998, 18:30–18:45, H

The Dirac Structure of the Nucleon Self-Energy — •E. Schiller, S. Ulrych, and H. Müther — Institut für Theoretische Physik
Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen

An important aspect of today’s Dirac Brueckner Hartree Fock calculations is the decomposition of the nucleon self-energy into Lorentz scalar and vector components. Different techniques exist for this decomposition, which also yield different results for the strength and momentum dependence of the components of the self-energy. In order to account for these differences, investigations are made by analysing the effective interaction in terms of an effective meson exchange model with coupling constants depending on density of nuclear matter. The results are compared to convential calculations.

[*] Supported by the DFG-Graduiertenkolleg Mu 705/3 and the DFG-Sonderforschungsbereich 382.