Dresden 2013 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 76: Struktur und Dynamik von Kernen

HK 76.3: Vortrag

Donnerstag, 7. März 2013, 17:30–17:45, HSZ-301

Operator representation for effective realistic interactions — •Dennis Weber, Hans Feldmeier, and Thomas Neff — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

We present a method to derive an operator representation from the partial wave matrix elements of effective realistic nucleon-nucleon potentials. This method allows to employ modern effective interactions, which are mostly given in matrix element representation, also in nuclear many-body methods requiring explicitly the operator representation, for example "Fermionic Molecular Dynamics" (FMD). We present results for the operator representation of effective interactions obtained from the Argonne V18 potential with the "Unitary Correlation Operator Method" (UCOM) and the "Similarity Renormalization Group" (SRG). Moreover, the operator representation allows a better insight in the nonlocal structure of the potential: While the UCOM transformed potential only shows a quadratic momentum dependence, the momentum dependence of SRG transformed potentials is beyond such a simple polynomial form.