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16 papers · 2 filters
New Skyrme energy density functional for a better description of the Gamow-Teller Resonance
X. Roca-Maza, G. Colo', H. Sagawa
We present a new Skyrme energy density functional (EDF) named SAMi [Phys. Rev. C 86 031306(R)]. This interaction has been accurately calibrated to reproduce properties of doubly-ma…
Giant Quadrupole Resonances in 208Pb, the nuclear symmetry energy and the neutron skin thickness
X. Roca-Maza, M. Brenna, B. K. Agrawal +5
Recent improvements in the experimental determination of properties of the Isovector Giant Quadrupole Resonance (IVGQR), as demonstrated in the A=208 mass region, may be instrument…
Sensitivity of the electric dipole polarizability to the neutron skin thickness in Pb
X. Roca-Maza, B. K. Agrawal, G. Colo' +5
The static dipole polarizability, , in Pb has been recently measured with high-resolution via proton inelastic scattering at the Research Center for Nuclear Ph…
Local covariant density functional constrained by the relativistic Hartree-Fock theory
H. Z. Liang, J. Meng, P. Ring +2
The recent progress in the localized covariant density functional constrained by the relativistic Hartree-Fock theory is briefly presented by taking the Gamow-Teller resonance in 9…
Quantitative study of coherent pairing modes with two neutron transfer: Sn-isotopes
G. Potel, A. Idini, F. Barranco +2
Pairing rotations and pairing vibrations are collective modes associated with a field, the pair field, which changes the number of particles by two. Consequently, they can be studi…
Localized form of Fock terms in nuclear covariant density functional theory
Haozhao Liang, Pengwei Zhao, Peter Ring +2
In most of the successful versions of covariant density functional theory in nuclei, the Fock terms are not included explicitly, which leads to local functionals and forms the basi…
Electron scattering in isotonic chains as a probe of the proton shell structure of unstable nuclei
X. Roca-Maza, M. Centelles, F. Salvat +1
Electron scattering on unstable nuclei is planned in future facilities of the GSI and RIKEN upgrades. Motivated by this fact, we study theoretical predictions for elastic electron…
Microscopic Study of the Isoscalar Giant Monopole Resonance in Cd, Sn and Pb Isotopes
Li-Gang Cao, H. Sagawa, G. Colo
The isoscalar giant monopole resonance (ISGMR) in Cd, Sn and Pb isotopes has been studied within the self-consistent Skyrme Hartree-Fock+BCS and quasi-particle random phase approxi…
Pairing correlations with single Cooper pair transfer to individual quantal states
Gregory Potel, Ricardo A. Broglia
With the help of the static and dynamic mean field spectroscopic amplitudes, taking into account successive and simultaneous transfer channels properly corrected because of non-ort…
More is different: 50 years of nuclear BCS
R. A. Broglia
Many of the concepts which are at the basis of the development associated with a quantitative treatment of the variety of phenomena associated with the spontaneous breaking of gaug…
Continuum particle-vibration coupling method in coordinate-space representation for finite nuclei
Kazuhito Mizuyama, Gianluca Colò, Enrico Vigezzi
In this paper we present a new formalism to implement the nuclear particle-vibration coupling (PVC) model. The key issue is the proper treatment of the continuum, that is allowed b…
A new Skyrme interaction with improved spin-isospin properties
X. Roca-Maza, G. Colo', H. Sagawa
A correct determination of the spin-isospin properties of the nuclear effective interaction should lead, among other improvements, to an accurate description of the Gamow-Teller Re…
Second-order equation of state with the full Skyrme interaction: toward new effective interactions for beyond mean-field models
Kassem Moghrabi, Marcella Grasso, Xavier Roca-Maza +1
In a quantum Fermi system the energy per particle calculated at the second order beyond the mean-field approximation diverges if a zero-range interaction is employed. We have previ…
The Gamow-Teller response within Skyrme random-phase approximation plus particle-vibration coupling
Yifei Niu, Gianluca Colo, Marco Brenna +2
Although many random-phase approximation (RPA) calculations of the Gamow-Teller (GT) response exist, this is not the case for calculations going beyond the mean-field approximation…
The pygmy dipole strength, the neutron radius of Pb and the symmetry energy
X. Roca-Maza, M. Brenna, M. Centelles +5
The accurate characterization of the nuclear symmetry energy and its density dependence is one of the outstanding open problems in nuclear physics. A promising nuclear observable i…
Electric dipole polarizability and the neutron skin
J. Piekarewicz, B. K. Agrawal, G. Colo +5
The recent high-resolution measurement of the electric dipole (E1) polarizability (alphad) in 208Pb [Phys. Rev. Lett. 107, 062502 (2011)] provides a unique constraint on the neutro…