Document Type
Article
Publication Date
2011
Publication Title
Physical Review A - Atomic, Molecular, and Optical Physics
Volume
83
Issue
3
First Page
34503-1
Last Page
34503-4
Abstract
We present improved calculations of variational energy eigenvalues for the 1s22s2S, 1s23s2S, and 1s22p2P states of lithium using basis sets with up to 30 224 terms in Hylleraas coordinates. The nonrelativistic energies for infinite nuclear mass are -7.4780603239101437(45) a.u. for 1s22s2S, -7. 3540984214443164(32) a.u. for 1s23s2S, and -7.4101565326516(5) a.u. for 1s22p2P, which represent the most accurate variational upper bounds to date. An important advantage of the basis sets with multiple distance scales is their exceptional numerical stability. © 2011 American Physical Society.
DOI
10.1103/PhysRevA.83.034503
Recommended Citation
Wang, L. M.; Yan, Z. C.; Qiao, H. X.; and Drake, Gordon W. F.. (2011). Variational upper bounds for low-lying states of lithium. Physical Review A - Atomic, Molecular, and Optical Physics, 83 (3), 34503-1-34503-4.
https://scholar.uwindsor.ca/physicspub/119
Comments
copyright American Physical Society http://dx.doi.org/10.1103/PhysRevA.83.034503