54 citations · 127 across the 14 of their papers we have counts for
14 papers
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…
Why nuclear forces favor the highest weight irreducible representations of the fermionic SU(3) symmetry
Andriana Martinou, Dennis Bonatsos, K. E. Karakatsanis +4
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 inter…
Parameter-free predictions for the collective deformation variables beta and gamma within the pseudo-SU(3) scheme
Dennis Bonatsos, Andriana Martinou, S. Sarantopoulou +3
The consequences of the short range nature of the nucleon-nucleon interaction, which forces the spatial part of the nuclear wave function to be as symmetric as possible, on the pse…
Breaking SU(3) spectral degeneracies in heavy deformed nuclei
Dennis Bonatsos, I. E. Assimakis, Andriana Martinou +3
Symmetries are manifested in nature through degeneracies in the spectra of physical systems. In the case of heavy deformed nuclei, when described in the framework of the Interactin…
Connection between Elliott SU(3) and spherical shell model bases
A. Martinou, N. Minkov, S. Sarantopoulou +3
In the Elliott SU(3) symmetry scheme the single particle basis is derived from the isotropic harmonic oscillator Hamiltonian in the Cartesian coordinate system. These states are tr…
Proxy-SU(3) symmetry for heavy deformed nuclei: nuclear spectra
D. Bonatsos, I. E. Assimakis, A. Martinou +3
The systematics of experimental energy differences between the levels of the ground state band and the gamma-1 band in even-even nuclei are studied as a function of the angular mom…
Manifestations of SU(3) symmetry in heavy deformed nuclei
D. Bonatsos, A. Martinou, I. E. Assimakis +3
The rapid increase of computational power over the last several years has allowed detailed microscopic investigations of the structure of many nuclei in terms of Relativistic Mean…
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…
Highest weight SU(3) irreducible representations for nuclei with shape coexistence
A. Martinou, D. Bonatsos, N. Minkov +3
The SU(3) irreducible representations (irreps) are characterised by the (lambda, mu) Elliott quantum numbers, which are necessary for the extraction of the nuclear deformation, the…
Why do Nilsson quantum numbers remain good at moderate deformations?
D. Bonatsos, I. E. Assimakis, A. Martinou +3
The Nilsson model is a simple microscopic model which has been extensively used over the years for the interpretation of a bulk of experimental results. The single particle orbital…
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)…
Particle-hole symmetry breaking due to Pauli blocking
D. Bonatsos, I. E. Assimakis, A. Martinou +3
Particle-hole symmetry has been used on several occasions in nuclear structure over the years. We prove that particle-hole symmetry is broken in nuclear shells possessing the proxy…
Parameter-independent predictions for nuclear shapes and B(E2) transition rates in the proxy-SU(3) model
A. Martinou, S. Peroulis, D. Bonatsos +6
Using a new approximate analytic parameter-free proxy-SU(3) scheme, we make predictions of shape observables for actinides and superheavy elements, namely beta and gamma deformatio…
Proxy-SU(3): A symmetry for heavy nuclei
D. Bonatsos, I. E. Assimakis, N. Minkov +6
The SU(3) symmetry realized by J. P. Elliott in the sd nuclear shell is destroyed in heavier shells by the strong spin-orbit interaction. On the other hand, the SU(3) symmetry has…