Emergent geometry and duality in the carbon nucleus

Shihang Shen, Serdar Elhatisari, Timo A. Lähde, Dean Lee (), Bing-Nan Lu and Ulf-G. Meißner
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Shihang Shen: Forschungszentrum Jülich
Serdar Elhatisari: Universität Bonn
Timo A. Lähde: Forschungszentrum Jülich
Dean Lee: Michigan State University
Bing-Nan Lu: Graduate School of China Academy of Engineering Physics
Ulf-G. Meißner: Forschungszentrum Jülich

Nature Communications, 2023, vol. 14, issue 1, 1-6

Abstract: Abstract The carbon atom provides the backbone for the complex organic chemistry composing the building blocks of life. The physics of the carbon nucleus in its predominant isotope, 12C, is similarly full of multifaceted complexity. Here we provide a model-independent density map of the geometry of the nuclear states of 12C using the ab initio framework of nuclear lattice effective field theory. We find that the well-known but enigmatic Hoyle state is composed of a “bent-arm” or obtuse triangular arrangement of alpha clusters. We identify all of the low-lying nuclear states of 12C as having an intrinsic shape composed of three alpha clusters forming either an equilateral triangle or an obtuse triangle. The states with the equilateral triangle formation also have a dual description in terms of particle-hole excitations in the mean-field picture.

Date: 2023
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DOI: 10.1038/s41467-023-38391-y

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