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Nonperturbative study of the damping of giant resonances in hot nuclei
Phys. Rev. Lett. 68, 1663 – Published 16 March, 1992
DOI: https://doi.org/10.1103/PhysRevLett.68.1663
Abstract
The damping of dipole and quadrupole motion in and at zero and finite temperature is studied including particle-particle and particle-hole interactions to all orders of perturbation. We find that the dipole dynamics in these light nuclei is well described in terms of mean-field theory (time-dependent Hartree-Fock), while the quadrupole motion is strongly damped through the coupling to more complicated configurations. Both the centroid and the damping width of the quadrupole and dipole giant resonances show a clear stability with temperature as a consequence of the weakening of the interaction, which contrasts with the increase of the phase space.
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