Abstract
For certain eigenvalue problems which lead to divergent Rayleigh-Schrödinger perturbation series, energy estimates of acceptable accuracy may be obtained easily in first order by optimising a variational scale factor. Some simple calculations on the quartic anharmonic oscillator and on the quadratic Zeeman effect show errors which are generally quite small over a very wide range of perturbation parameter values.
Original language | English |
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Pages (from-to) | 295-298 |
Number of pages | 4 |
Journal | Chemical Physics Letters |
Volume | 105 |
Issue number | 3 |
DOIs | |
State | Published - 16 Mar 1984 |