Unitary-model-operator approach to Λ hypernuclei Original Research Article

The unitary-model-operator approach (UMOA) is formulated for the description of lambda hypernuclei. The method is applied to Λ17O. A lambda-nucleon effective interaction is derived, taking the coupling of the sigma-nucleon channel into account. The lambda single-particle energies are calculated for the View the MathML source, View the MathML source and View the MathML source states employing the Nijmegen soft-core (NSC), Jülich model-Ã (JÃ) and model-B̃ (JB̃) hyperon-nucleon potentials.