Semiclassical spinning strings and confining gauge theories

TL;DR

This paper analyzes multi-charged rotating string states in confining gauge theories, deriving classical energy/charge relations and quantum corrections, and discusses implications for dual field theories and AdS/CFT correspondence.

Contribution

It provides the first detailed computation of quantum corrections to multi-charged spinning strings in confining backgrounds, extending the understanding of holographic duals of hadronic states.

Findings

Classical energy/charge relations for folded and circular strings derived.

Quantum corrections are non-perturbative and significant at large charges.

Implications for dual multi-charged hadrons and AdS/CFT duality discussed.

Abstract

We study multi-charged rotating string states on Type IIB regular backgrounds dual to confining SU(N) gauge theories with (softly broken) {\cal N}=1 supersymmetry, in the infra red regime. After exhibiting the classical energy/charge relations for the folded and circular two-charge strings, we compute in the latter case the one loop sigma-model quantum correction. The classical relation has an expansion in positive powers of the analogous of the BMN effective coupling, while the quantum corrections are non perturbative in nature and are not subleading in the limit of infinite charge. We comment about the dual field theory multi-charged hadrons and the implications of our computation for the AdS/{\cal N}=4 duality.