Understanding the Effect of Chiral NN Parametrization on Nuclear Shapes From an Ab Initio Perspective

Kevin S. Becker; Kristina D. Launey; Andreas Ekström; Grigor H. Sargsyan; Darin C. Mumma; Tomáš Dytrych; Daniel Langr; Jerry P. Draayer

arXiv · 2311.13020

Understanding the Effect of Chiral NN Parametrization on Nuclear Shapes From an Ab Initio Perspective

Kevin S. Becker·Kristina D. Launey·Andreas Ekström·Grigor H. Sargsyan·Darin C. Mumma·Tomáš Dytrych·Daniel Langr·Jerry P. Draayer

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Abstract

The ab initio symmetry-adapted no-core shell model naturally describes nuclear deformation and collectivity, and is therefore well-suited to studying the dynamics and coexistence of shapes in atomic nuclei. For the first time, we analyze how these features in low-lying states of 6Li and 12C are impacted by the underlying realistic nucleon-nucleon interaction. We find that the interaction parametrization has a notable but limited effect on collective shapes in the lowest 6Li and 12C states, while collective structures in the excited 2+ state of 12C are significantly more sensitive to the interaction parameters and exhibits emergent shape coexistence.

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Kevin S. Becker, Kristina D. Launey, Andreas Ekström, Grigor H. Sargsyan, Darin C. Mumma, Tomáš Dytrych, Daniel Langr, Jerry P. Draayer. 2023-11-21. Understanding the Effect of Chiral NN Parametrization on Nuclear Shapes From an Ab Initio Perspective. https://arxiv.org/abs/2311.13020

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