Related Experiment Video
Updated: Jul 30, 2025
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Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow
Published on: April 24, 2014
10.8K
Emergent geometry and duality in the carbon nucleus
Shihang Shen1, Serdar Elhatisari2,3, Timo A Lähde1,4
1Institut für Kernphysik, Institute for Advanced Simulation, Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425, Jülich, Germany.
Nature Communications
|May 15, 2023
Summary
Researchers mapped nuclear states of carbon-12 (¹²C) using advanced theory. The Hoyle state and other low-lying states feature three alpha clusters in triangular arrangements, revealing new insights into nuclear structure.
Area of Science:
- Nuclear Physics
- Quantum Chemistry
- Atomic and Molecular Physics
Background:
- Carbon-12 (¹²C) is fundamental to organic chemistry and life.
- The nuclear structure of ¹²C, particularly the Hoyle state, presents complex physics challenges.
Purpose of the Study:
- To create a model-independent density map of ¹²C nuclear states.
- To elucidate the geometric arrangement of alpha clusters within ¹²C nuclear states.
Main Methods:
- Utilizing the ab initio framework of nuclear lattice effective field theory.
- Performing calculations to determine the geometry of nuclear states.
Main Results:
- The Hoyle state of ¹²C exhibits a 'bent-arm' or obtuse triangular alpha cluster configuration.
- All low-lying ¹²C states possess intrinsic shapes of three alpha clusters in equilateral or obtuse triangular formations.
- Equilateral triangle states show a dual description via particle-hole excitations in the mean-field picture.
Conclusions:
- The study provides a detailed geometric understanding of ¹²C nuclear states.
- The findings offer new perspectives on the structure of the Hoyle state and other low-lying states.
- This work advances the ab initio description of nuclear systems.
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