Berlin 2005 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 27: Theorie

HK 27.4: Talk

Tuesday, March 8, 2005, 14:45–15:00, TU MA005

Hartree-Fock and RPA model based on correlated realistic nucleon-nucleon potentials — •Nils Paar, Panagiota Papakonstantinou, Robert Roth, and Heiko Hergert — TU-Darmstadt

The spherical Hartree-Fock model is formulated in the harmonic oscillator basis, starting from the realistic nucleon-nucleon interactions with explicit treatment of interaction-induced correlations via the unitary correlation operator method (UCOM). The binding energies, charge radii, one-body density distributions, and single-particle energies are evaluated along the nuclide chart, to investigate the utility of the model for a consistent description of the nuclear ground state. It is shown that one can improve the structure properties by extending the model space to include the long-range correlations (e.g. many-body perturbation theory), and by implementing an additional phenomenological two-body correction, which simulates the missing three-body interactions. For the studies of collective excitation phenomena, the fully self-consistent random phase approximation is formulated in the configurational space built from the Hartree-Fock single-particle basis.

Work supported by the DFG (SFB 634).