The Background Field Method and the S Matrix
May, 19839 pages
Published in:
- Nucl.Phys.B 229 (1983) 372-380
- Published: 1983
Report number:
- BRX-TH35
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Abstract: (Elsevier)
We prove that the S -matrix can be correctly obtained from the gauge-invariant effective action in the background field approach to gauge theories. In addition, we present a computation of the two-loop fermionic contributions to the Yang-Mills β-function.- GAUGE FIELD THEORY: BACKGROUND FIELD
- GAUGE FIELD THEORY: EFFECTIVE ACTION
- GAUGE FIELD THEORY: YANG-MILLS
- S-MATRIX
- RENORMALIZATION: BETA FUNCTION
- FERMION
- INVARIANCE: GAUGE
- FEYNMAN GRAPH: HIGHER-ORDER
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