Abstract
The consequences of the attractive, short-range nucleon–nucleon (NN) interaction on the wave functions of the Elliott SU(3) and the proxy-SU(3) symmetry are discussed. The NN interaction favors the most symmetric spatial SU(3) irreducible representation, which corresponds to the maximal spatial overlap among the fermions. The percentage of the symmetric components out of the total in an SU(3) wave function is introduced, through which it is found, that no SU(3) irrep is more symmetric than the highest weight irrep for a certain number of valence particles in a three dimensional, isotropic, harmonic oscillator shell. The consideration of the highest weight irreps in nuclei and in alkali metal clusters, leads to the prediction of a prolate to oblate shape transition beyond the mid-shell region
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This manuscript has no associated data or the data will not be deposited. [Authors’ comment: All the data are presented in the manuscript.]
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Communicated by Nicolas Alamanos
This research is co-financed by Greece and the European Union (European Social Fund-ESF) through the Operational Programme “Human Resources Development, Education and Lifelong Learning 2014-2020” in the context of the project “Nucleon Separation Energies” (MIS 5047793)
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Martinou, A., Bonatsos, D., Karakatsanis, K.E. et al. Why nuclear forces favor the highest weight irreducible representations of the fermionic SU(3) symmetry. Eur. Phys. J. A 57, 83 (2021). https://doi.org/10.1140/epja/s10050-021-00395-x
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DOI: https://doi.org/10.1140/epja/s10050-021-00395-x