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VOLUME 91 (2010) | ISSUE 9 | PAGE 487
Four-point vector correlators and AdS/QCD correspondence
Abstract
We derive the four-point vector correlators in QCD from AdS/QCD correspondence. It is shown that meson poles are correctly reproduced. The final expression also suggests a nonzero amplitude in the limit of zero virtuality of two longitudinal photons. This fact does not mean that one can produce, absorb or scatter real longitudinal photons.