Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2001-10-30
Nucl.Phys.A703:240-268,2002
Physics
Nuclear Physics
Nuclear Theory
41 pages, LaTeX, 4 eps figures
Scientific paper
10.1016/S0375-9474(01)01531-7
We derive analytical expressions for the excitation energy of the isoscalar giant monopole and quadrupole resonances in finite nuclei, by using the scaling method and the extended Thomas-Fermi approach to relativistic mean field theory. We study the ability of several non-linear sigma-omega parameter sets of common use in reproducing the experimental data. For monopole oscillations the calculations agree better with experiment when the nuclear matter incompressibility of the relativistic interaction lies in the range 220-260 MeV. The breathing-mode energies of the scaling method compare satisfactorily with those obtained in relativistic RPA and time-dependent mean field calculations. For quadrupole oscillations all the analyzed non-linear parameter sets reproduce the empirical trends reasonably well.
Centelles Mario
Estal Del M.
Patra Sunando Kumar
Viñas Xavier
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