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HK: Fachverband Physik der Hadronen und Kerne

HK 14: Theorie

HK 14.7: Talk

Monday, March 10, 2008, 18:30–18:45, 2F

Spectroscopic amplitudes and spectroscopic factors calculated in the Fermionic Molecular Dynamics approach — •Benjamin Hellwig and Thomas Neff — GSI, Darmstadt

Fermionic Molecular Dynamics (FMD) is an ideal approach to describe various properties like clustering and halos of light nuclei. The many-body states in this microscopic model are Slater determinants containing Gaussian wave packets as basis states. The Unitary Correlated Operator Method enables us to include the short-range central and tensor correlations providing an effective interaction derived from the realistic Argonne V18 interaction.

We calculate spectroscopic amplitudes and spectroscopic factors using the FMD many-body wave functions. Center-of-mass and recoil effects are treated properly. Effects of clustering and halos are studied in systems like ⁷Li, decomposed into ⁶He 0⁺ and 2⁺ components. The dipole response in ¹¹Be provides information about the neutron halo.