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HK: Fachverband Physik der Hadronen und Kerne

HK 13: Focus Session I: New Results on Nuclear Structure at Shell Closures

HK 13.3: Hauptvortrag

Dienstag, 12. März 2024, 15:00–15:30, HBR 14: HS 1

Ab initio advances for medium-heavy nuclei and electroweak properties — •Takayuki Miyagi — Technische Universität Darmstadt, Department of Physics, 64289 Darmstadt, Germany — ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany

A reliable prediction of electroweak processes involving a nucleus is required to further understand nuclear structure and other related topics, such as nucleosynthesis and particle physics. In the past two decades, the range of applicability of nuclear ab initio calculations has been rapidly extending and reaching mass number of   200 systems. With controlled uncertainty estimations, an ab initio calculation can provide a meaningful prediction where performing experiments is difficult or impossible. Nuclear radii and moments are complementary information to the energies and can be useful tools to test the quality of the calculations. In this presentation, I will discuss our recent results for charge radii, magnetic and quadrupole moments of medium-heavy nuclei computed with the combination of chiral effective-field theory and valence-space in-medium similarity renormalization group approach.

* Funded by ERC Grant Agreement No. 101020842

Keywords: Nuclear physics; Ab initio calculation; Chiral effective field theory; Radii and moments