Analytical approach to the helium-atom ground state using correlated wavefunctions
- 14 March 1996
- journal article
- letter
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 29 (5), L147-L150
- https://doi.org/10.1088/0953-4075/29/5/003
Abstract
A realistic three-parameter correlated wavefunction is used to construct an exact analytical expression for the expectation value of the helium-atom Hamiltonian expressed in the interparticle coordinates. The parameters determined variationally are found to satisfy the orbital and correlation cusp conditions to a fair degree of accuracy and yield a value for the ground-state energy which is in good agreement with the exact result.This publication has 8 references indexed in Scilit:
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