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Darmstadt 2008 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Postersitzung

HK 34.75: Poster

Donnerstag, 13. März 2008, 14:00–16:00, Poster C3

Shell model and RPA study of the proton Pygmy resonance using VUCOM. — •Carlo Barbieri, Karlheinz Langanke, and Gabriel Martínez-Pinedo — GSI, Planckstr. 1, 64291 Darmstadt, Germany

The Pygmy resonance in proton rich 32,34Ar isotopes is studied accounting up to three-particle–three-hole (3p3h) configurations and using the VUCOM interaction, based on the unitary correlator operator method.

Calculations using the consistent Hartree-Fock plus random phase approximation (HF+RPA) approach predict the appearance of a Pygmy peak at low excitation energies. Thus, confirming previous relativistic mean-field RPA results. The effects of configuration mixing beyond the 1p1h were investigated using the No-Core Shell Model in an appropriate HF basis.

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