Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 32: Struktur und Dynamik von Kernen
HK 32.1: Gruppenbericht
Mittwoch, 21. März 2012, 16:30–17:00, RW 3
Neutron rich calcium isotopes studied with two- and three-body forces — Jason Davidson Holt1,2, •Javier Menéndez3,4, and Achim Schwenk4,3 — 1Department of Physics and Astronomy, University of Tennessee, Knoxville, USA — 2Physics Division, Oak Ridge National Laboratory, Oak Ridge, USA — 3Institute für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany — 4ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
Three-body (3N) forces have been shown to be essential to the description of light nuclei. Recently, Shell Model calculations based on chiral EFT interactions have also been applied to explain features (the oxygen dripline, the magic number N=28) that couldn’t be explained by microscopic NN-only interactions. I will present new results that follow this framework, regarding the ground and excited states of neutron rich calcium isotopes. In particular, I will focus on the importance of including 3N forces in binding energies, pairing gaps and spectroscopic factors. These can be related to the existence (or not) of non-standard magic numbers N=32, 34 or 40.