GAUGE INDEPENDENCE OF THE S-MATRIX IN THE CAUSAL APPROACH

Authors
ASTE A SCHARF G DUTSCH M
Citation
A. Aste et al., GAUGE INDEPENDENCE OF THE S-MATRIX IN THE CAUSAL APPROACH, Journal of physics. A, mathematical and general, 31(6), 1998, pp. 1563-1579
Citations number
23
Categorie Soggetti
Physics,"Physycs, Mathematical
Journal title
Journal of physics. A, mathematical and general → ACNP
ISSN journal
03054470
Volume
31
Issue
6
Year of publication
1998
Pages
1563 - 1579
Database
ISI
SICI code
0305-4470(1998)31:6<1563:GIOTSI>2.0.ZU;2-2
Abstract
The gauge dependence of the time-ordered products for Yang-Mills theor ies is analysed in perturbation theory by means of the causal method o f Epstein and Glaser together with perturbative gauge invariance. This approach allows a simple inductive proof of the gauge independence of the physical S-matrix.