Gauge independence of the S-matrix in the causal approach
نویسنده
چکیده
The gauge dependence of the time-ordered products for Yang-Mills theories is analysed in perturbation theory by means of the causal method of Epstein and Glaser together with perturbative gauge invariance. This approach allows a simple inductive proof of the gauge independence of the physical S-matrix. Work supported by Alexander von Humboldt Foundation
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تاریخ انتشار 1997