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Mostrando ítems 1-10 de 117
Artículo
Comment on “Pairing interaction and Galilei invariance”
(American Physical Society, 1999)
A recent article by Dussel, Sofia, and Tonina studies the relation between Galilei invariance and dipole energy weighted sum rule (EWSR). The authors find that the pairing interaction, which is neither Galilei nor Lorentz ...
Artículo
Continuum discretization in a basis of transformed harmonic-oscillator states
(American Physical Society, 2001)
The method of defining a transformed harmonic-oscillator (THO) basis, designed to take an account of continuum, by an appropriate discretization is discussed. This method is applied to two analytical one-dimensional ...
Artículo
Be 9 elastic scattering on Pb 208 and Al 27 within a four-body reaction framework
(American Physical Society, 2015)
We investigate low-energy Be9 elastic scattering on two different targets (heavy, light) within a four-body framework using the continuum-discretized coupled-channels (CDCC) method. The Be9 projectile is described in an ...
Artículo
A general algebraic model for molecular vibrational spectroscopy
(Elsevier, 1996)
We introduce the anharmonic oscillator symmetry model to describe vibrational excitations in molecular systems exhibiting a high degree of symmetry. A systematic procedure is proposed to establish the relation between the ...
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 ...
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
Determining astrophysical three-body radiative capture reaction rates from inclusive Coulomb break-up measurements
(American Physical Society, 2016-04-12)
A relationship between the Coulomb inclusive break-up probability and the radiative capture reaction rate for weakly bound three-body systems is established. This direct link provides a robust procedure to estimate the ...
Artículo
Coulomb breakup in a transformed harmonic oscillator basis
(American Physical Society, 2006-05-10)
The problem of Coulomb breakup in the scattering of a two-body loosely bound projectile by a heavy target is addressed. A basis of transformed harmonic oscillator (THO) wave functions is used to discretize the projectile ...
Artículo
Backbending of Dy isotopes described with the neutron-photon IBA plus two-quasiparticle model
(Elsevier, 1986)
The formalism of the neutron-photon interacting boson model, extended to include two-quasiparticle excitations, is used in a study of the high spin states of 154,156,158Dy isotropes. Good agreement is obtained between the ...
Artículo
Three-body radiative capture reactions
(EDP Sciences, 2017)
Radiative capture reaction rates for 6He, 9Be and 17Ne formation at astrophysical conditions are studied within a three-body model using the analytical transformed harmonic oscillator method to calculate their states. An ...