Note on an application of the method of uniqueness to reduced quantum electrodynamics

Abstract

Using the method of uniqueness a two-loop massless propagator Feynman diagram with a non-integer index on the central line is evaluated in a very transparent way. The result is applied to the computation of the two-loop polarization operator in reduced quantum electrodynamics.

Comments: (v2) 4 pages, 2 figures; references added, footnote added before Eq.(20), other minor modifications, no change in results; to appear in PRD (v1) LaTeX file with feynMF package. 4 pages, no figure