8 papers · 1 filter
Robustness of the proxy-SU(3) symmetry in atomic nuclei and the role of the next highest weight irreducible representation
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +4
The proxy-SU(3) symmetry predicts, in a parameter-free way, the collective deformation variables beta and gamma in even-even atomic nuclei away from closed shells based on the high…
Preponderance of triaxial shapes in atomic nuclei predicted by the proxy-SU(3) symmetry
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +4
The proxy-SU(3) symmetry predicts, in a parameter-free way, based only on the Pauli principle and the short-range nature of the nucleon-nucleon interaction, non-vanishing values of…
Nuclear shape / phase transitions in the N = 40, 60, 90 regions
Dimitrios Petrellis, Adam Prášek, Petr Alexa +3
We investigate the isotopes of Se, Zr, Mo and Nd in the regions with N = 40, 60 and 90, where a first-order shape / phase transition, from spherical to deformed, can be observed. T…
Seven years of the proxy-SU(3) shell model symmetry
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +2
The proxy-SU(3) symmetry was first presented in HINPw4 in Ioannina in May2017, justified within the Nilsson model and applied to parameter-free predictions of the collective variab…
Phase transitions in N = 40, 60 and 90 nuclei
A. Prášek, P. Alexa, D. Bonatsos +3
In this paper we focus on three mass regions where first-order phase transitions occur, namely for , 60 and 90. We investigate four isotopic chains (Se, Zr, Mo and Nd) in the…
Mean-field derived IBM-1 Hamiltonian with intrinsic triaxial deformation
Polytimos Vasileiou, Dennis Bonatsos, Theo J. Mertzimekis
An interacting-boson-model-1 (IBM-1) Hamiltonian, derived from self-consistent mean-field calculations using a Skyrme energy density functional is employed for the study of energy…