Scaling, renormalisation and accuracy of perturbation calculations

M. Cohen*, S. Kais

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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 languageEnglish
Pages (from-to)295-298
Number of pages4
JournalChemical Physics Letters
Volume105
Issue number3
DOIs
StatePublished - 16 Mar 1984

Fingerprint

Dive into the research topics of 'Scaling, renormalisation and accuracy of perturbation calculations'. Together they form a unique fingerprint.

Cite this