ESTIMATING PERTURBATIVE COEFFICIENTS IN QUANTUM-FIELD THEORY USING PADE APPROXIMANTS

Citation
Ma. Samuel et al., ESTIMATING PERTURBATIVE COEFFICIENTS IN QUANTUM-FIELD THEORY USING PADE APPROXIMANTS, Physics letters. Section B, 323(2), 1994, pp. 188-192
Citations number
12
Categorie Soggetti
Physics
Journal title
ISSN journal
03702693
Volume
323
Issue
2
Year of publication
1994
Pages
188 - 192
Database
ISI
SICI code
0370-2693(1994)323:2<188:EPCIQT>2.0.ZU;2-H
Abstract
Continuing our program to estimate perturbative quantum field theory c oefficients from Pade approximants (P.A.) we extend our analysis to Ty pe II P.A. We show how one can use these Pades, in a simple way, and w e obtain results consistent with our previous results for Pade I, in a ddition, we consider a new case, the anomalous magnetic moment of the tau lepton. Our results agree well with independent estimates made usi ng the Kinoshita method. Following this, we apply our method to estima te perturbative coefficients in four QCD sum-rules. The results are ex cellent!