CONVERGENCE OF THE OPTIMIZED DELTA-EXPANSION FOR THE CONNECTED VACUUMAMPLITUDE - ANHARMONIC-OSCILLATOR

Authors
ARVANITIS C JONES HF PARKER CS
Citation
C. Arvanitis et al., CONVERGENCE OF THE OPTIMIZED DELTA-EXPANSION FOR THE CONNECTED VACUUMAMPLITUDE - ANHARMONIC-OSCILLATOR, Physical review. D. Particles and fields, 52(6), 1995, pp. 3704-3711
Citations number
17
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
52
Issue
6
Year of publication
1995
Pages
3704 - 3711
Database
ISI
SICI code
0556-2821(1995)52:6<3704:COTODF>2.0.ZU;2-3
Abstract
The convergence of the linear delta expansion for the connected genera ting functional of the quantum anharmonic oscillator is proved. Using an order-dependent scaling for the variational parameter lambda, we sh ow that the expansion converges to the exact result with an error boun ded by A exp(-cN(1/3)).