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 V_low-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 V_low-k up to a momentum scale Lambda ~ 500 MeV. Although the various bare Nijmegen models differ somewhat from each other, the corresponding V_low-k interactions show convergence in some channels, suggesting a possible unique YN interaction at low momenta.

4 pages, 6 figures

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• Equations of state for supernovae and compact stars
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• Strangeness nuclear physics: a critical review on selected topics
• Hyperons: the strange ingredients of the nuclear equation of state
• Density-dependent effective baryon-baryon interaction from chiral three-baryon forces
• Hyperon-nucleon single-particle potentials with low-momentum interactions
• Prospects to study hyperon-nucleon interactions at BESIII
• First measurement of $\Lambda N$ inelastic scattering with $\Lambda$ from $e^{+}{e}^{-}\to J/\psi \to \Lambda \bar{\Lambda }$
• On the convergence of multi-channel effective interactions
• Dense Hadronic Matter in Neutron Stars
• Equivalent hyperon-nucleon interactions in low-momentum space
• Hyperon interaction with dense nuclear matter and link to neutron stars
• Strange Baryons in Nuclei and Neutron Stars