Unitary-model-operator approach to hypernuclei
S. Fujii, R. Okamoto, K. Suzuki
Abstract
A method is formulated for the description of lambda hypernuclei in the framework of the unitary-model-operator approach (UMOA). The method is applied to 17O. 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 0s1/2, 0p3/2 and 0p1/2 states employing the Nijmegen soft-core (NSC), J\"ulich model-\~A (J\~A) and model-\~B (J\~B) hyperon-nucleon potentials.
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