54 citations · 162 across the 13 of their papers we have counts for
13 papers
The Confined beta-Soft rotor model in rare-earth nuclei
Jim A. Papadopoulos, T. J. Mertzimekis, P. Koseoglou +2
Contemporary theoretical descriptions of nuclear structure rely mainly on microscopic, single-particle frameworks often in competition with collective degrees of freedom, especiall…
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…
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…
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…
Prolate-oblate shape transitions and O(6) symmetry in even-even nuclei: A theoretical overview
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +2
Prolate to oblate shape transitions have been predicted in an analytic way in the framework of the Interacting Boson Model (IBM), determining O(6) as the symmetry at the critical p…
Signatures for shape coexistence and shape/phase transitions in even-even nuclei
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +2
Systematics of B(E2) transition rates connecting the first excited 0+ state to the first excited 2+ state of the ground state band in even-even nuclei indicates that shape coexiste…
The proxy-SU(3) symmetry in atomic nuclei
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +2
The microscopic origins and the up-to-now predictions of the proxy-SU(3) symmetry model of atomic nuclei are reviewed. Starting from the experimental evidence for the special role…
Islands of shape coexistence: theoretical predictions and experimental evidence
Andriana Martinou, Dennis Bonatsos, S. K. Peroulis +3
Parameter-free theoretical predictions based on a dual shell mechanism within the proxy-SU(3) symmetry of atomic nuclei, as well as covariant density functional theory calculations…
Islands of shape coexistence in proxy-SU(3) symmetry and in covariant density functional theory
Dennis Bonatsos, K. E. Karakatsanis, Andriana Martinou +2
Shape coexistence in even-even nuclei is observed when the ground state band of a nucleus is accompanied by another K=0 band at similar energy but with radically different structur…
Microscopic origin of shape coexistence in the N=90, Z=64 region
Dennis Bonatsos, K. E. Karakatsanis, Andriana Martinou +2
A microscopic explanation of the nature of shape coexistence in the N=90, Z=64 region is suggested, based on calculations of single particle energies through standard covariant den…
The islands of shape coexistence within the Elliott and the proxy-SU(3) Models
Andriana Martinou, Dennis Bonatsos, T. J. Mertzimekis +5
A novel dual-shell mechanism for the phenomenon of shape coexistence in nuclei within the Elliott SU(3) and the proxy-SU(3) symmetry is proposed for all mass regions. It is suppose…
Magic numbers for shape coexistence
I. E. Assimakis, D. Bonatsos, A. Martinou +4
The increasing deformation in atomic nuclei leads to the change of the classical magic numbers (2,8,20,28,50,82..) which dictate the arrangement of nucleons in complete shells. The…
Nucleon numbers for nuclei with shape coexistence
A. Martinou, D. Bonatsos, N. Minkov +4
We consider two competing sets of nuclear magic numbers, namely the harmonic oscillator (HO) set (2, 8, 20, 40, 70, 112, 168, 240,...) and the set corresponding to the proxy-SU(3)…