Large Nc QCD and Harmonic Sums

Abstract

In the Large-Nc limit of QCD, two--point functions of local operators become Harmonic Sums. I review some properties which follow from this fact and which are relevant for phenomenological applications. This has led us to consider a class of Analytic Number Theory Functions as toy models of Large-Nc QCD which I also discuss.

Comments: Based on my talk at "Raymond Stora's 80th Birthday Party", LAPP, July 11th 2011