An evaluation of the analytic continuation by duality technique
T. Takeuchi, L. C. Goonetileke, S. R. Ignjatovic, L. C. R. Wijewardhana
Abstract
In Nucl. Phys. B391 (1993) 127, the value of the oblique correction parameter S for walking technicolor theories was estimated using a technique called Analytic Continuation by Duality (ACD). We apply the ACD technique to the perturbative vacuum polarization function and find that it fails to reproduce the well known result S=1/6π. This brings into question the reliability of the ACD technique and the ACD estimate of S.
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