Münster 2017 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 49: Structure and Dynamics of Nuclei VIII
HK 49.1: Gruppenbericht
Donnerstag, 30. März 2017, 16:45–17:15, F 33
Shell model interactions from chiral effective field theory* — •Lukas Huth1,2, Victoria Durant1,2, Johannes Simonis1,2, and Achim Schwenk1,2,3 — 1Institut für Kernphysik, Technische Universität Darmstadt — 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH — 3Max-Planck-Institut für Kernphysik, Heidelberg
We construct effective valence-space interactions for the use in shell model calculations, where the residual two-body interaction is based on symmetry principles and the low-momentum expansion from chiral effective field theory. In addition to the usual free-space operators we also include center-of-mass momentum operator terms that arise due to the translational and Galilean invariance breaking by in-medium effects. We fitted the low-energy constants and single particle energies to 442 ground- and excited-state energies in the sd shell and obtained a root mean square derivation of 442 keV. Our valence-space interactions provide uncertainty estimates and show promising predictions.
*This work is supported by the ERC Grant No. 307986 STRONGINT, the GSI-TU Darmstadt cooperation, the BMBF Grant No. 05P15RDFN1, and the DFG through Grant SFB 1245.