✦ LIBER ✦

Scaling, renormalisation and accuracy of perturbation calculations

✍ Scribed by M. Cohen; S. Kais

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 268 KB
Volume: 105
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(84)85033-2

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✦ Synopsis

l-or certain eigenvalue problems whrch lead to dkergent Rayleigh-Schrbdinger perturbation series, enegy estimates oi acceptable accuracy may be obtzined casrly m first order by optn-nlsing a vanahonal scale factor. Some simple calculations on the quartic anharmonic osc2lator and on the quadratic Zecman effect shorn errors xxhich are generally quite %mdl over a very wide range of perturbation pammeter valuer All (lY75) 1865.

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