Variational calculations of the $Λ$-seperation energy of the $_Λ^{17}$O hypernucleus
Variational Monte Carlo calculations have been made for the $_{ Λ}^{17}$O hypernucleus using realistic two- and three-baryon interactions. A two pion exchange potential with spin- and space-exchange components is used for the $Λ$N potential. Three-body two-pion exchange and strongly repulsive dispersive $Λ$NN interactions are also included. The trial wave function is constructed from pair- and triplet-correlation operators acting on a single particle determinant. These operators consist of central, spin, isospin, tensor and three- baryon potential components. A cluster Monte Carlo method is developed for noncentral correlations and is used with up to four-baryon clusters in our calculations. The three-baryon $Λ$NN force is discussed.
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