205 citations · 1.1k across the 35 of their papers we have counts for
26 papers · 1 filter
Woods-Saxon-type of mean-field potentials with effective mass derived from the D1S Gogny force
A. Bhagwat, M. Centelles, X. Viñas +1
Analytic average mean-field potentials of the Fermi-function (Woods-Saxon) type for the whole nuclear chart with space-dependent effective mass are deduced from the D1S Gogny force…
Equation of Motion Method to strongly correlated Fermi systems and Extended RPA approaches
P. Schuck, D. S. Delion, J. Dukelsky +4
The status of different extensions of the Random Phase Approximation (RPA) is reviewed. The general framework is given within the Equation of Motion Method and the equivalent Green…
Bridging the quartet and pair pictures of isovector proton-neutron pairing
V. V. Baran, D. R. Nichita, D. Negrea +3
The formal implications of a quartet coherent state ansatz for proton-neutron pairing are analyzed. Its nonlinear annihilation operators, which generalize the BCS linear quasiparti…
Generic size dependences of pairing in ultrasmall systems: electronic nano-devices and atomic nuclei
A. Pastore, P Schuck, X. Viñas
Average, global pairing behaviours of electronic devices, like films, wires, and grains are studied with semiclassical methods, as Weyl and Thomas-Fermi approximations, in the ultr…
Experimental status of the nuclear spin scissors mode
E. B. Balbutsev, I. V. Molodtsova, P. Schuck
With the Wigner Function Moments (WFM) method the scissors mode of the actinides and rare earth nuclei are investigated. The unexplained experimental fact that in Th a doub…
Nuclear scissors modes and hidden angular momenta
E. B. Balbutsev, I. V. Molodtsova, P. Schuck
The coupled dynamics of low lying modes and various giant resonances are studied with the help of the Wigner Function Moments method generalized to take into account spin degrees o…
The Barcelona-Catania-Paris-Madrid functional with a realistic effective mass
M. Baldo, L. M. Robledo, P. Schuck +1
The Barcelona-Catania-Paris-Madrid (BCPM) functional recently proposed to describe nuclear structure properties of finite nuclei is generalized as to include a realistic effective…
Generalized Second-Order Thomas-Fermi Method for Superfluid Fermi Systems
J. C. Pei, Na Fei, Y. N. Zhang +1
Using the -expansion of the Green's function of the Hartree-Fock-Bogoliubov equation, we extend the second-order Thomas-Fermi approximation to generalized superfluid Fermi s…
Pairing in exotic neutron rich nuclei around the drip line and in the crust of neutron stars
A. Pastore, J. Margueron, P. Schuck +1
Exotic and drip-line nuclei as well as nuclei immersed in a low density gas of neutrons in the outer crust of neutron stars are systematically investigated with respect to their ne…
A new type of nuclear collective motion - the spin scissors mode
E. B. Balbutsev, I. V. Molodtsova, P. Schuck
The coupled dynamics of low lying modes and various giant resonances are studied with the help of the Wigner Function Moments method on the basis of Time Dependent Hartree-Fock equ…
Accurate nuclear masses from a three parameter Kohn-Sham DFT approach (BCPM)
M. Baldo, L. M. Robledo, P. Schuck +1
Given the promising features of the recently proposed Barcelona-Catania-Paris (BCP) functional \cite{Baldo.08}, it is the purpose of this paper to still improve on it. It is, for i…
Suppression of Superfluidity upon Overflow of Trapped Fermions. Quantal and Thomas-Fermi Studies
P. Schuck, X. Viñas
Two issues are treated in this work: (i) the generic fact that if a fermionic superfluid in the BCS regime overflows from a narrow container into a much wider one, pairing is much…
Relativistic mean field interaction with density dependent meson-nucleon vertices based on microscopical calculations
X. Roca-Maza, X. Viñas, M. Centelles +2
Although ab-initio calculations of relativistic Brueckner theory lead to large scalar isovector fields in nuclear matter, at present, successful versions of covariant density funct…
Spin Scissors Mode and the Fine Structure of M1 States in Nuclei
E. B. Balbutsev, I. V. Molodtsova, P. Schuck
The coupled dynamics of low lying modes, including the scissors mode, and various giant quadrupole resonances are studied with the help of the Wigner Function Moments method genera…
Thomas-Fermi approximation to pairing in finite Fermi systems. The weak coupling regime
X. Viñas, P. Schuck, M. Farine
We present a new semiclassical theory for describing pairing in finite Fermi systems. It is based on taking the , i.e. Thomas-Fermi, limit of the gap equation written…
Energy density functional on a microscopic basis
M Baldo, LM Robledo, P. Schuck +1
In recent years impressive progress has been made in the development of highly accurate energy density functionals, which allow to treat medium-heavy nuclei. In this approach one t…
Octupole deformation properties of the Barcelona-Catania-Paris energy density functionals
L. M. Robledo, M. Baldo, P. Schuck +1
We discuss the octupole deformation properties of the recently proposed Barcelona-Catania-Paris (BCP) energy density functionals for two sets of isotopes, those of radium and bariu…
Microscopic-Macroscopic Approach for Binding Energies with Wigner-Kirkwood Method
A. Bhagwat, X. Viñas, M. Centelles +2
The semi-classical Wigner-Kirkwood expansion method is used to calculate shell corrections for spherical and deformed nuclei. The expansion is carried out up to fourth orde…
Nuclear Scissors with Pairing and Continuity Equation
E. B. Balbutsev, L. A. Malov, P. Schuck +1
The coupled dynamics of the isovector and isoscalar giant quadrupole resonances and low lying modes (including scissors) are studied with the help of the Wigner Function Moments (W…
Deformation properties of the BCP energy density functional
L. M. Robledo, M. Baldo, P. Schuck +1
We explore the deformation properties of the newly postulated BCP energy density functional (EDF). The results obtained for three isotope chains of Mg, Dy and Ra are compared to th…
Density-induced suppression of the alpha-particle condensate in nuclear matter and the structure of alpha cluster states in nuclei
Y. Funaki, H. Horiuchi, G. Röpke +3
At low densities, with decreasing temperatures, in symmetric nuclear matter alpha-particles are formed, which eventually give raise to a quantum condensate with four-nucleon alpha-…
The Nuclear Scissors Mode from Various Aspects
E. B. Balbutsev, P. Schuck
Three methods to describe collective motion, Random Phase Approximation (RPA), Wigner Function Moments (WFM) and the Green's Function (GF) method are compared in detail and their p…
Low densities in nuclear and neutron matters and in the nuclear surface
M. Baldo, C. Maieron, P. Schuck +1
Nuclear and neutron matters are investigated in the low density region, well below the nuclear saturation density. Microscopic calculations, based on the Bethe-Brueckner approach w…
Semiclassical evaluation of average nuclear one and two body matrix elements
X. Vinas, P. Schuck, M. Farine +1
Thomas-Fermi theory is developed to evaluate nuclear matrix elements averaged on the energy shell, on the basis of independent particle Hamiltonians. One- and two-body matrix eleme…