Unified analysis of spin isospin responses of nuclei

Wakasa, T.; Ichimura, M.; Sakai, H.

doi:10.1103/physrevc.72.067303

Cited by 28 publications

(23 citation statements)

References 25 publications

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“…In the figure, our discrete results have been folded with a Lorentz function of 1 MeV width. The arrows indicate the experimental values of the main peak energies [44][45][46][47]. The consistency and convergence of our calculations can be verified by observing the sum rule values given in Table VI.…”

Section: Resultssupporting

confidence: 65%

Charge-exchange excitations with finite-range interactions including tensor terms

et al. 2014

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We study charge-exchange excitations in doubly magic-nuclei by using a self-consistent HartreeFock plus Random Phase Approximation model. We use four Gogny-like finite-range interactions, two of them containing tensor forces. We investigate the effects of the various parts of the tensor forces in the two computational steps of our model, and we find that their presence is not negligible and improves the agreement with the experimental data.

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Section: Resultssupporting

confidence: 65%

Charge-exchange excitations with finite-range interactions including tensor terms

et al. 2014

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“…Empirically, the Landau parameter G 0 has been extensively investigated, and its value can vary from about zero to 1.6 depending on the models and methods [32,[36][37][38][39][40][41][42]. In the present work with the standard SHF approach, a positive G 0 leads to G V 70 MeV fm 5 as shown in Fig.…”

Section: The Theoretical Modelmentioning

confidence: 78%

Density slope of the nuclear symmetry energy from the neutron skin thickness of heavy nuclei

et al. 2010

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Expressing explicitly the parameters of the standard Skyrme interaction in terms of the macroscopic properties of asymmetric nuclear matter, we show in the Skyrme-Hartree-Fock approach that unambiguous correlations exist between observables of finite nuclei and nuclear matter properties. We find that existing data on neutron skin thickness r np of Sn isotopes give an important constraint on the symmetry energy E sym (ρ 0 ) and its density slope L at saturation density ρ 0 . Combining these constraints with those from recent analyses of isospin diffusion and the double neutron/proton ratio in heavy-ion collisions at intermediate energies leads to a more stringent limit on L approximately independent of E sym (ρ 0 ). The implication of these new constraints on the r np of 208 Pb as well as the core-crust transition density and pressure in neutron stars is discussed.

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“…As suggested in Refs. [67,68], and taken into account by the fit of SAMi, we ought to respect the relations G ′ 0 > G 0 > 0. Here, we obtain slightly different values with respect to SAMi as we are attempting to include more terms in the functional (tensor terms) and to reconcile with different pseudo-data (associated with neutron-proton drops and neutron drops from RBHF calculations).…”

Section: A Fitted Resultsmentioning

confidence: 99%

Skyrme functional with tensor terms from ab initio calculations of neutron-proton drops

Shen

Roca-Maza

2019

Phys. Rev. C

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A new Skyrme functional devised to account well for standard nuclear properties as well as for spin and spin-isospin properties is presented. The main novelty of this work relies on the introduction of tensor terms guided by ab initio relativistic Brueckner-Hartree-Fock calculations of neutron-proton drops. The inclusion of tensor term does not decrease the accuracy in describing bulk properties of nuclei, experimental data of some selected spherical nuclei such as binding energies, charge radii, and spin-orbit splittings can be well fitted. The new functional is applied to the investigation of various collective excitations such as the Giant Monopole Resonance (GMR), the Isovector Giant Dipole Resonance (IVGDR), the Gamow-Teller Resonance (GTR), and the Spin-Dipole Resonance (SDR). The overall description with the new functional is satisfactory and the tensor terms are shown to be important particularly for the improvement of the Spin-Dipole Resonance results. Predictions for the neutron skin thickness based on the non-energy weighted sum rule of the Spin-Dipole Resonance are also given. PACS numbers:

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Unified analysis of spin isospin responses of nuclei

Cited by 28 publications

References 25 publications

Charge-exchange excitations with finite-range interactions including tensor terms

Charge-exchange excitations with finite-range interactions including tensor terms

Density slope of the nuclear symmetry energy from the neutron skin thickness of heavy nuclei

Skyrme functional with tensor terms from ab initio calculations of neutron-proton drops

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