CONSTRUCTION OF THE STRONG-COUPLING EXPANSION FOR THE GROUND-STATE ENERGY OF THE QUARTIC, SEXTIC, AND OCTIC ANHARMONIC-OSCILLATOR VIA A RENORMALIZED STRONG-COUPLING EXPANSION

Authors
WENIGER EJ
Citation
Ej. Weniger, CONSTRUCTION OF THE STRONG-COUPLING EXPANSION FOR THE GROUND-STATE ENERGY OF THE QUARTIC, SEXTIC, AND OCTIC ANHARMONIC-OSCILLATOR VIA A RENORMALIZED STRONG-COUPLING EXPANSION, Physical review letters, 77(14), 1996, pp. 2859-2862
Citations number
27
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
77
Issue
14
Year of publication
1996
Pages
2859 - 2862
Database
ISI
SICI code
0031-9007(1996)77:14<2859:COTSEF>2.0.ZU;2-3
Abstract
A recently developed renormalized strong coupling expansion [E. J. Wen iger, Ann. Phys. (N.Y.) 246, 133 (1996)] is employed to compute the co efficients of the standard strong coupling expansion for the ground st ate energy of the quartic, sextic, and octic anharmonic oscillator. Th is approach is very simple, both conceptually and technically, and pro duces more accurate results than previously used techniques which were in most cases applied to the quartic case only.