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DOE OSTI · 3017204

Unexpected Rise in Nuclear Collectivity from Short-Range Physics

Becker, Kevin S. [Louisiana State University, Baton Rouge, LA (United States)] (ORCID:0000000338987210)·Launey, Kristina D. [Louisiana State University, Baton Rouge, LA (United States)] (ORCID:0000000283237104)·Ekström, Andreas [Chalmers University of Technology, Göteborg (Sweden)] (ORCID:0000000249174293)·Dytrych, Tomáš [Louisiana State University, Baton Rouge, LA (United States); Nuclear Physics Institute of the Czech Academy of Sciences, Rez (Czech Republic)] (ORCID:0000000215541462)·Langr, Daniel [Czech Technical University in Prague (Czech Republic)] (ORCID:0000000197607068)·Sargsyan, Grigor H. [Michigan State University, East Lansing, MI (United States)] (ORCID:0000000235892315)·Draayer, Jerry P. [Louisiana State University, Baton Rouge, LA (United States)] (ORCID:0000000335688223)
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Abstract

We discover a surprising relation between the collective motion of nucleons within atomic nuclei, traditionally understood to be driven by long-range correlations, and short-range nucleon-nucleon interactions. Specifically, we find that quadrupole collectivity in low-lying states of 6 Li and 12 C, calculated with state-of-the-art ab initio techniques, is significantly influenced by two opposing 𝑆-wave contact couplings that subtly alter the surface oscillations of one largely deformed nuclear shape, without changing that shape’s overall contribution within the nucleus. The results offer new insights into the nature of emergent nuclear collectivity and its link to the underlying nucleon-nucleon interaction at short distances.

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Ab initio calculationsCollective modelsModels based on symmetriesNuclear many-body theoryNuclear shapes and momentsNucleon-nucleon interactions

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Becker, Kevin S. [Louisiana State University, Baton Rouge, LA (United States)] (ORCID:0000000338987210), Launey, Kristina D. [Louisiana State University, Baton Rouge, LA (United States)] (ORCID:0000000283237104), Ekström, Andreas [Chalmers University of Technology, Göteborg (Sweden)] (ORCID:0000000249174293), Dytrych, Tomáš [Louisiana State University, Baton Rouge, LA (United States); Nuclear Physics Institute of the Czech Academy of Sciences, Rez (Czech Republic)] (ORCID:0000000215541462), Langr, Daniel [Czech Technical University in Prague (Czech Republic)] (ORCID:0000000197607068), Sargsyan, Grigor H. [Michigan State University, East Lansing, MI (United States)] (ORCID:0000000235892315), Draayer, Jerry P. [Louisiana State University, Baton Rouge, LA (United States)] (ORCID:0000000335688223). 2026-01-13. Unexpected Rise in Nuclear Collectivity from Short-Range Physics. https://doi.org/10.1103/c3st-tp13

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