The effective interaction hyperspherical-harmonics method, formulated for local forces, is generalized to accommodate nonlocal interactions. As for local potentials this formulation retains the separation of the hyperradial part leading solely to a hyperspherical effective interaction. By applying the method to study ground-state properties of (4)He with a modern effective-field-theory nucleon-nucleon potential model (Idaho-N3LO), one finds a substantial acceleration in the convergence rate of the hyperspherical-harmonics series. Also studied are the binding energies of the six-body nuclei (6)He and (6)Li with the JISP16 nuclear force. Again an excellent convergence is observed.
Hyperspherical effective interaction for nonlocal potentials
Leidemann, Winfried;Orlandini, Giuseppina
2010-01-01
Abstract
The effective interaction hyperspherical-harmonics method, formulated for local forces, is generalized to accommodate nonlocal interactions. As for local potentials this formulation retains the separation of the hyperradial part leading solely to a hyperspherical effective interaction. By applying the method to study ground-state properties of (4)He with a modern effective-field-theory nucleon-nucleon potential model (Idaho-N3LO), one finds a substantial acceleration in the convergence rate of the hyperspherical-harmonics series. Also studied are the binding energies of the six-body nuclei (6)He and (6)Li with the JISP16 nuclear force. Again an excellent convergence is observed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
