Low-momentum Hyperon-Nucleon Interactions
Abstract
We present a first exploratory study for hyperon-nucleon interactions using renormalization group techniques. The effective two-body low-momentum potential Vlow-k is obtained by integrating out the high-momentum components from realistic Nijmegen YN potentials. A T-matrix equivalence approach is employed, so that the low-energy phase shifts are reproduced by Vlow-k up to a momentum scale Lambda ~ 500 MeV. Although the various bare Nijmegen models differ somewhat from each other, the corresponding Vlow-k interactions show convergence in some channels, suggesting a possible unique YN interaction at low momenta.
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