A Relativistic Thomas-Fermi Description of Collective Modes in Droplets of Nuclear Matter
C. da Providência, L. Brito, J. da Providência, M. Nielsen, X. Viñas
Abstract
Isoscalar collective modes in a relativistic meson-nucleon system are investigated in the framework of the time-dependent Thomas-Fermi method. The energies of the collective modes are determined by solving consistently the dispersion relations and the boundary conditions. The energy weighted sum rule satisfied by the model allows the identification of the giant ressonances. The percentage of the energy weighted sum rule exhausted by the collective modes is in agreement with experimental data, but the energies come too high.
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