| Issue |
EPL
Volume 85, Number 3, February 2009
|
|
|---|---|---|
| Article Number | 33001 | |
| Number of page(s) | 4 | |
| Section | Atomic, Molecular and Optical Physics | |
| DOI | https://doi.org/10.1209/0295-5075/85/33001 | |
| Published online | 05 February 2009 | |
Ritz variational treatment of the 4He trimer
Department of Physics, University of Colorado - Boulder, CO 80309-0390, USA
Corresponding author: geltman@colorado.edu
Received:
20
January
2009
Accepted:
27
January
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.
PACS: 31.15.xt – Variational techniques / 33.15.Dj – Interatomic distances and angles / 33.15.Fm – Bond strengths, dissociation energies
© EPLA, 2009
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