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Artículo
Intrinsic state for an extended version of the interacting boson model
(American Physical Society, 2000-03-01)
An intrinsic-state formalism for the interacting boson model IBM-4 is presented. A basis of deformed bosons is introduced which allows the construction of a general trial wave function that has Wigner’s spin-isospin SU(4) ...
Artículo
Anharmonic double-phonon excitations in the interacting boson model
(American Physical Society, 2002-12-01)
Double−γ vibrations in deformed nuclei are analyzed in the context of the interacting boson model. A simple extension of the original version of the model towards higher-order interactions is required to explain the observed ...
Artículo
Anharmonic double-γ vibrations in nuclei and their description in the interacting boson model
(American Physical Society, 2000-04-01)
Double-γ vibrations in deformed nuclei are studied in the context of the interacting boson model with special reference to their anharmonic character. It is shown that large anharmonicities can be obtained with interactions ...
Artículo
Coupling of Dipole Mode to γ -unstable Quadrupole Oscillations
(Elsevier, 2000)
The coupling of the high-lying dipole mode to the low-lying quadrupole modes for the case of deformed γ-unstable nuclei is studied. Results from the geometrical model are compared to those obtained within the dipole boson ...
Artículo
Hartree-Bose mean-field approximation for the interacting boson model (IBM-3)
(American Physical Society, 1998-02-01)
A Hartree-Bose mean-field approximation for the IBM-3 is presented. A Hartree-Bose transformation from spherical to deformed bosons with charge-dependent parameters is proposed which allows bosonic pair correlations and ...