Variational calculations of the Λ-seperation energy of the Λ17O hypernucleus
A. A. Usmani, Steven C. Pieper, Q. N. Usmani
Abstract
Variational Monte Carlo calculations have been made for the Λ17O hypernucleus using realistic two- and three-baryon interactions. A two pion exchange potential with spin- and space-exchange components is used for the ΛN potential. Three-body two-pion exchange and strongly repulsive dispersive ΛNN 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 ΛNN force is discussed.
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