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Hyperon-nucleon single-particle potentials with low-momentum interactions
Authors:H Ðapo  B -J Schaefer  J Wambach
Institution:1. Institut für Kernphysik, TU Darmstadt, Schlo?gartenstr. 9, D-64289, Darmstadt, Germany
2. Institut für Physik, Karl-Franzens-Universit?t Graz, Universit?tsplatz 5, A-8010, Graz, Austria
3. Gesellschaft für Schwerionenforschung mbH, Planckstr. 1, D-64291, Darmstadt, Germany
Abstract:Single-particle potentials in Hartree-Fock approximation for different hyperon-nucleon (YN channels are calculated in the framework of the effective low-momentum YN interaction $\ensuremath{V_{{\rm low} k}}$ . In contrast to the nucleon-nucleon interaction, the available experimental data for the YN interaction are scarce. As a consequence, no unique YN low-momentum potential $\ensuremath{V_{{\rm low} k}}$ can be predicted from the various bare potentials. The resulting momentum- and density-dependent single-particle potentials for several different bare OBE models and for chiral effective field theory are compared to each other.
Keywords:21  65  -f Nuclear matter  13  75  Ev Hyperon-nucleon interactions  21  30  Fe Forces in hadronic systems and effective interactions
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