Exotic hadron holography from anomalous dimensions

TL;DR

This paper explores how anomalous dimensions of hadronic operators can be used within holographic models to gain gauge-invariant insights into exotic hadron states, exemplified by tetraquark components in scalar mesons.

Contribution

It introduces a method to extract gauge-invariant exotic hadron information from holographic duals using anomalous dimensions of interpolators.

Findings

Holographic description of tetraquark components in scalar mesons.

Anomalous dimensions encode information about exotic hadron contributions.

Provides a link between gauge-invariant properties and gravity duals.

Abstract

The anomalous dimensions of hadronic interpolators contain dynamical information on the properties of the associated hadron states. We point out that they provide, in particular, a link by which gauge-invariant information on exotic contributions to hadronic wavefunctionals can be obtained from approximate gravity duals for QCD. This is demonstrated by the holographic description of a dominant tetraquark component in the lightest scalar mesons.