Münster 2017 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 13: Structure and Dynamics of Nuclei II
HK 13.4: Talk
Tuesday, March 28, 2017, 12:00–12:15, F 2
Weinberg eigenvalue analysis based on chiral forces — •Jan Hoppe1,2, Christian Drischler1,2, 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 apply the Weinberg eigenvalue analysis as a powerful tool to investigate and quantify the perturbativeness of recent local and semilocal chiral nucleon-nucleon potentials. This check is of particular interest in the framework of (many-body) perturbation theory. We study the impact of cutoff variations on non-perturbative sources, such as the repulsive core in terms of the so-called Weinberg eigenvalues. We show results in different partial waves, in free-space and in-medium, where we distinguish repulsive and attractive eigenvalues to diagnose the impact of the different non-perturbative sources. Due to recent advances in normal-ordering, we are able to include 3N contributions up to N3LO and present results for more traditional chiral potentials.
*This work is supported by the DFG through Grant SFB 1245 and the ERC Grant No. 307986 STRONGINT.