135 citations · 174 across the 5 of their papers we have counts for
4 papers · 1 filter
Generalized rotational hamiltonians from nonlinear angular momentum algebras
A. Ballesteros, O. Civitarese, F. J. Herranz +1
Higgs algebras are used to construct rotational Hamiltonians. The correspondence between the spectrum of a triaxial rotor and the spectrum of a cubic Higgs algebra is demonstrated.…
The Friedrichs-Model with fermion-boson couplings II
O. Civitarese, M. Gadella, G. P. Pronko
In this work we present a formal solution of the extended version of the Friedrichs Model. The Hamiltonian consists of discrete and continuum bosonic states, which are coupled to f…
Short-range correlations and neutrinoless double beta decay
M. Kortelainen, O. Civitarese, J. Suhonen +1
In this work we report on the effects of short-range correlations upon the matrix elements of neutrinoless double beta decay. We focus on the calculation of the matrix elements of…
QRPA and its extensions in a solvable model
Jorge G. Hirsch, Peter O. Hess, Osvaldo Civitarese
An exactly solvable model is introduced, which is equivalent to the exact shell-model treatment of protons and neutrons in a single j-shell for Fermi-type excitations. Exact energi…