2020/03/19 by N. Itagaki, Tokuro Fukui, Itagaki, Naoyuki +3
Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Nuclear physics research studies #Quantum, superfluid, helium dynamics
paper · pdf · doi:10.48550/arxiv.2003.08546
openalex publication_date 2020/03/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We aim to describe the cluster states of nuclear systems starting with a realistic interaction, which is a challenge of modern nuclear theories. Here, the short-range correlation of realistic interaction is treated by employing the damping factor, and the resultant interaction can be applied to the cluster structure of light nuclei. We start with a realistic interaction (G3RS) and transform it in this way, and the α-α energy curve is compared with the results of phenomenological interactions. The attractive effect between two α's is found to be not enough even with a damping factor for the short-range repulsion, and the necessity of a finite-range three-body term is discussed. With this three-body term, the resonance energy of the ground state and the scattering phase shift of two α's can be reproduced. Also, the binding energy of 16O from the four α threshold is reasonably reproduced. The linear-chain structure of three and four α clusters in 12C and 16O are calculated with this interaction and compared with the results of the conventional approaches including the density functional theories.