title: Anharmonic properties of the double giant dipole resonance
abstract: A systematic microscopic study of the anharmonic properties of the double giant dipole resonance (DGDR) has been carried out, for the first time, for nuclei with mass number A spanning the whole mass table. It is concluded that the corrections of the energy centroid of the Jpi = 0(+) and 2(+) components of the DGDR from its harmonic limit are negative, have a value of the order of a few hundred keV, and follow an A-1 dependence.
authors.affiliation: Dipartimento di Fisica, Universita di Milano and INFN Sezione di Milano, Via Celoria 16, I-20133 Milano, Italy and Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Moscow region, Russia.
authors.initials: VY
authors.lastname: Ponomarev
authors.initials: PF
authors.lastname: Bortignon
authors.initials: RA
authors.lastname: Broglia
authors.initials: VV
authors.lastname: Voronov