Highly Excited Hadrons in QCD and Beyond

Abstract

I discuss two issues related to high "radial" excitations which attracted much attention recently: (i) chiral symmetry restoration in excited mesons and baryons, and (ii) universality of the rho-meson coupling in QCD and AdS/QCD. New results are reported and a curious relation between an AdS/QCD formula and 1977 Migdal's proposal is noted.

Comments: References added in v2. 20 pages, 5 figures. Based on talks delivered at the First Workshop on Quark-Hadron Duality and the Transition to pQCD, Laboratori Nazionali di Frascati, Italy, June 6-8, 2005, and the Workshop on Highly Excited Hadrons, ECT* in Trento, Italy, July 4-9, 2005