Field-Dependent BRS Tranformations and Correct Prescription for 1/(n.k)p-Type Singularities in Axial Gauges
A. Misra
Abstract
The axial-gauge boson propagator contains 1/(n.k)p-type singularities. These singularities have generally been treated by inventing prescriptions for them. We propose an alternative procedere for treating these singularities in the path-integral formalism using the known way of treating the 1/k2n-type singularities in Lorentz-type gauges. For this purpose we use a finite field-dependent BRS transformation that inerpolates between the Lorentz and axial-type gauges. We arrive at the ε-dependent tree propagator in axial-type gauges.
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