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The background field method and the S-matrix

โœ Scribed by L.F. Abbott; M.T. Grisaru; R.K. Schaefer


Book ID
116144786
Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
368 KB
Volume
229
Category
Article
ISSN
0550-3213

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The background field method allows the evaluation of the effective action by exploiting the (background) gauge invariance, which in general yields Ward identities, i.e., linear relations among the vertex functions. In the present approach an extra gauge fixing term is introduced right at the beginni