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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Structure and Dynamics of Nuclei IX

HK 46.1: Gruppenbericht

Donnerstag, 2. April 2020, 14:00–14:30, J-HS H

Accurate Nuclear Structure Studies with Consistent Chiral Two- plus Three-Nucleon Interactions — •Thomas Hüther, Stefan Alexa, Marco Knöll, Laura Mertes, Tobias Mongelli, Julius Müller, Tobias Wolfgruber, and Robert Roth — Institut für Kernphysik, Darmstadt, Deutschland

We have developed a family of chiral two- plus three-nucleon interactions for an accurate ab initio description of ground-state energies and charge radii up to the medium mass regime. This family uses consistent chiral order, regulator, and cutoff values for two- and three-nucleon interactions up to N3LO and allows for a vigorous quantification of theory uncertainties based on the chiral order-by-order convergence and the cutoff dependence.

Recent advances in ab initio many-body methods, in particular, the no-core shell model and the in-medium similarity renormalization group, provide us with the opportunity to probe ground-states and excitation spectra in light as well as in medium mass nuclei. We focus on presenting oxygen and carbon spectroscopy results for the chiral interaction family.

Supported by DFG (SFB 1245).

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DPG-Physik > DPG-Verhandlungen > 2020 > Bonn