München 2006 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 56: Elektromagnetische und Hadronische Sonden
HK 56.4: Vortrag
Freitag, 24. März 2006, 15:00–15:15, F
Shell Model Monte Carlo in the pn-formalism — •Cem Oezen1 and David J. Dean2 — 1Gesellschaft für Schwerionenforschung mbH, Planckstraße 1, 64291 Darmstadt, GERMANY — 2Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
We report on the development of a new shell-model Monte Carlo algorithm, which uses the proton-neutron formalism. Shell model Monte Carlo methods, within the isospin formulation, have been successfully used in large-scale shell-model calculations. Motivation for this work is to extend the feasibility of these methods to shell-model studies involving non-identical proton and neutron valence spaces. We show the viability of the new approach with some test results. Finally, we use a realistic effective nucleon-nucleon interaction in the model space described by (1p1/2,0g9/2) proton and (1d5/2,2s1/2,1d3/2,0g7/2,0h11/2) neutron orbitals above the 88Sr core to calculate ground-state energies,binding energies, B(E2) strengths, and study pairing properties of the even-even 90−104Zr and 92−106Mo isotope chains.