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Mostrando ítems 1-10 de 11
Artículo
On the relation between algebraic and configuration space calculations of molecular vibrations
(Elsevier, 1996-03)
The relation between algebraic and traditional calculations of molecular vibrations is investigated. An explicit connection between interactions in configuration space and the corresponding algebraic interactions is established.
Artículo
One nucleon transfer operator and nuclear supersymmetry
(American Physical Society, 2005-01-01)
The appropriate use of the interacting boson-fermion model one nucleon transfer operator in connection with nuclear supersymmetries is discussed. We emphasize that care must be taken in using the same coupling ...
Artículo
Coupling to breakup channels using a transformed harmonic oscillator basis
(American Physical Society, 2002-01-01)
The application of a recently proposed procedure for discretizing the continuum to collision processes involving weakly bound nuclei is studied. In particular, the coupling to breakup states in ...
Artículo
Quantum phase transitions in the interacting boson model: Integrability, level repulsion, and level crossing
(American Physical Review, 2003-10-17)
We study the quantum phase transition mechanisms that arise in the interacting boson model. We show that the second-order nature of the phase transition from U(5) to O(6) may be attributed to quantum integrability, whereas ...
Artículo
Phase transitions and critical points in the rare-earth region
(American Physical Society, 2003-08-01)
A systematic study of isotope chains in the rare-earth region is presented. For chains 60 144 2 154Nd, 62 146 2 160Sm, 64 148 2 162Gd, and 66 150 2 166 Dy, energy levels, E2 transition rates, and two-neutron separation ...
Artículo
Finite-size scaling exponents in the interacting boson model
(American Physical Society, 2005-07-01)
We investigate the finite-size scaling exponents for the critical point at the shape-phase transition from U(5) (spherical) to O(6) (deformed γ-unstable) dynamical symmetries of the interacting boson model, making use of ...
Artículo
The sextic oscillator as a γ-independent potential
(American Physical Society, 2004-01-01)
The sextic oscillator is proposed as a two-parameter solvable g-independent potential in the Bohr Hamiltonian. It is shown that closed analytical expressions can be derived for the energies and wave functions of the first ...
Artículo
Three-body continuum discretization in a basis of transformed harmonic oscillator states
(American Physical Society, 2005-01-01)
The inclusion of the continuum in the study of weakly bound three-body systems is discussed. A transformed harmonic oscillator basis is introduced to provide an appropriate discrete and finite basis for treating the ...
Artículo
U(5)-O(6) transition in the interacting boson model and the E(5) critical point symmetry
(American Physical Society, 2003-10-01)
The relation of the recently proposed E(5) critical point symmetry with the interacting boson model is investigated. The large-N limit of the interacting boson model at the critical point in the transition ...
Artículo
Describing resonances in a discrete basis
(American Physical Society, 2004-03-01)
The problem of describing resonances when the continuum is represented by a discrete set of normalizable states is addressed. In particular, here the description of resonances in a transformed harmonic oscillator basis is ...