Bochum 2018 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 32: Structure and Dynamics of Nuclei VI
HK 32.2: Vortrag
Mittwoch, 28. Februar 2018, 14:15–14:30, HZO 70
Weinberg eigenvalue analysis based on chiral effective field theory interactions — •Jan Hoppe1,2, Christian Drischler3,1,2, Kai Hebeler1,2, and Achim Schwenk1,2,4 — 1Institut für Kernphysik, Technische Universität Darmstadt — 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH — 3Department of Physics, University of California, Berkeley — 4Max-Planck-Institut für Kernphysik, Heidelberg
We present a comprehensive Weinberg eigenvalue analysis of a representative set of modern nucleon-nucleon interactions derived within chiral effective field theory, containing recently developed local, semilocal, and nonlocal potentials. We demonstrate that a direct comparison of numerical cutoff values of different interactions is in general misleading due to the different analytic form of regulators. Our detailed comparison of Weinberg eigenvalues provides various insights into properties of chiral potentials for different orders and partial waves. This shows that Weinberg eigenvalues could be used as a helpful monitoring scheme when constructing new interactions.
*This work is supported by the DFG through Grant SFB 1245 and the ERC Grant No. 307986 STRONGINT.