An accurate few-parameter ground state wave function for the Lithium atom
Atomic Physics
2015-05-13 v2
Abstract
A simple, seven-parameter trial function is proposed for a description of the ground state of the Lithium atom. It includes both spin functions. Inter-electronic distances appear in exponential form as well as in a pre-exponential factor, and the necessary energy matrix elements are evaluated by numerical integration in the space of the relative coordinates. Encouragingly accurate values of the energy and the cusp parameters as well as for some expectation values are obtained.
Cite
@article{arxiv.0901.3020,
title = {An accurate few-parameter ground state wave function for the Lithium atom},
author = {Nicolais L. Guevara and Frank E Harris and Alexander V Turbiner},
journal= {arXiv preprint arXiv:0901.3020},
year = {2015}
}
Comments
9 pages, dedicated to Frank E Harris on the occasion of his birthday, extra references added as well as the results for expectation values