On direct and crossed channel asymptotics of four-point functions in AdS/CFT correspondence

Abstract

We analyse the leading logarithmic singularities in direct and crossed channel limit of the four-point functions in dilaton-axion sector of type IIB supergravity on $Ad{S}_5$ in AdS/CFT correspondence. Logarithms do not cancel in the full correlator in both channels.

Revised version, typos corrected, 9 pages, no figures