Generating functional for gauge-invariant Green's functions

Charles M. Sommerfield

Physica A: Statistical Mechanics and its Applications, 1979, vol. 96, issue 1, 309-314

Abstract: A generating functional to be used for calculating gauge-invariant Green's functions of a non-Abelian gauge theory is constructed in terms of an unconstrained external current. This functional is a singular distribution and so must be treated as the limit of a well-defined functional, one particular choice of which is that for a massive gauge theory as the mass goes to zero. It is suggested that the gauge-invariant Green's functions so obtained may be smooth in this limit.

Date: 1979
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:96:y:1979:i:1:p:309-314

DOI: 10.1016/0378-4371(79)90220-6

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