| 1. |
- Betan, Rodolfo Id., et al.
(författare)
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Description of the continuum part of the spectrum by using the complex. energy plane
- 2005
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Ingår i: Journal of Physics G. - : IOP Publishing. - 0954-3899 .- 1361-6471. ; 31:8, s. S1329-S1336
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Tidskriftsartikel (refereegranskat)abstract
- Processes occurring in the continuum part of the spectrum are described by using a basis consisting of bound and antibound states plus Gamow resonances and the continuum background. The calculations, performed in the complex energy plane, are applied to the study of weakly bound nuclei. The influence of antibound states upon physical quantities in halo nuclei is assessed.
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| 2. |
- Id Betan, Rodolfo M., et al.
(författare)
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Complex shell model with antibound states
- 2005
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Ingår i: Key Topics in Nuclear Structure. - : WORLD SCIENTIFIC. ; , s. 91-101
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Konferensbidrag (refereegranskat)abstract
- An unified shell model scheme to evaluate simultaneously the contributions of bound single-particle states, Gamow resonances, antibound (virtual) states and continuum complex scattering states is presented. The formalism could be very suitable to study processes occurring in the continuum part of the nuclear spectra.
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| 3. |
- Id Betan, Rodolfo M, et al.
(författare)
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Two-particle resonances in the complex energy plane
- 2004
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Ingår i: Few-body systems. - : Springer Science and Business Media LLC. - 0177-7963 .- 1432-5411. ; 34:1-3, s. 51-56
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Tidskriftsartikel (refereegranskat)abstract
- An evaluation of two-particle resonances in the complex energy plane is presented. The representation used in the method consists of bound and antibound single-particle states, Gamow resonances and scattering waves on the complex energy plane. Within this representation the structure of halo nuclei is studied.
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| 4. |
- Sandulescu, Neculai
(författare)
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Nuclear superfluidity and specific heat in the inner crust of neutron stars
- 2004
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Ingår i: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 70:2, s. 025801-
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Tidskriftsartikel (refereegranskat)abstract
- We analyze the temperature dependence of pairing correlations in the inner crust matter of neutron stars. The study is done in a finite-temperature HFB approach and by using a zero range pairing force adjusted to the pairing properties of infinite neutron matter. Within the same approach we investigate how the specific heat of the inner crust depends on temperature, matter inhomogeneity, and the assumption used for the pairing force. It is shown that in a physical relevant range of densities the pairing properties of inner crust matter depend significantly on temperature. The finite-temperature HFB calculations show also that the specific heat is rather sensitive to the presence of nuclear clusters inside the inner crust. However, the most dramatic change of the specific heat is determined by the scenario used for the neutron matter superfluidity.
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| 5. |
- Sandulescu, Neculai, et al.
(författare)
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Superfluid properties of the inner crust of neutron stars
- 2004
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Ingår i: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 69:4, s. 045802-
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Tidskriftsartikel (refereegranskat)abstract
- Superfluid properties of the inner crust matter of neutron stars, formed by nuclear clusters immersed in a dilute neutron gas, are analyzed in a self-consistent Hartree-Fock-Bogoliubov approach. The calculations are performed with two pairing forces, fixed so as to obtain in infinite nuclear matter the pairing gaps provided by the Gogny force or by induced interactions. It is shown that the nuclear clusters can either suppress or enhance the pairing correlations inside the inner crust matter, depending on the density of the surrounding neutrons. The profile of the pairing field in the inner crust is rather similar for both pairing forces, but the values of the pairing gaps are drastically reduced for the force which simulates the polarization effects in infinite neutron matter.
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