Dirac-Brueckner Approach to Hyperon Interactions and Hypernuclei

Details Dirac-Brueckner Approach to Hyperon Interactions and Hypernuclei Dirac-Brueckner Approach to Hyperon Interactions and Hypernuclei

2000-08-09

arxiv.org/abs/nucl-th/0008016v1

Physics

Nuclear Physics

Nuclear Theory

To appear in: Proceedings of the International Workshop on Hypernuclear Physics with Electromagnetic Probes (HYJLAB99), ed. by

Scientific paper

The density dependent relativistic hadron (DDRH) theory is introduced as an effective field theory for nuclei and hypernuclei. A Dirac-Brueckner approach to in-medium nucleon-hyperon interactions is presented. Density dependent meson-baryon vertices are determined from DBHF self-energies in infinite matter. Scaling laws for hyperon vertices are derived from a diagrammatic analysis of self-energies. In a local density approximation the DB vertices are applied in relativistic DDRH Hartree calculations to finite hypernuclei. Lambda single particle spectra and spin-orbit splittings are described reasonably well over the whole mass region.

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