Ritz variational treatment of the 4He trimerS Geltman
Department of Physics, University of Colorado - Boulder, CO 80309-0390, USA
received 20 January 2009; accepted in final form 27 January 2009; published February 2009
published online 5 February 2009
The 4He trimer is treated by the Ritz variational method using trial functions whose accuracy has been tested by a similar treatment of the dimer, for which an exact solution exists. These are nodeless functions containing four nonlinear parameters that are varied to give the minimum value for the ground-state energy. Agreement with measurement is obtained for the mean bond lengths of the trimer, but there is some disagreement with other non-variational calculations of the ground-state binding energy.
31.15.xt - Variational techniques.
33.15.Dj - Interatomic distances and angles.
33.15.Fm - Bond strengths, dissociation energies.
© EPLA 2009