Lambda-nucleon effective interaction in unitary-model-operator approach

A lambda-nucleon effective interaction for lambda hypernuclei is derived in the unitary-model-operator approach. Numerical calculation is performed for 17ΛO, using the hyperon-nucleon interactions of the Nijmegen soft-core including the '97-models, Juelich Abar and Bbar. The single-particle energies of lambda in the 0s1/2, 0p3/2, 0p1/2 and the partial-wave contributions to the potential energy of lambda in the 0s1/2 state are calculated