Augmenting the Gauge-Gravity Correspondence to include Hadron Polarizabilities

TL;DR

This paper extends the ADS/CFT framework to include hadron polarizabilities by incorporating effective vertices and meson propagation, enabling the calculation of static polarizabilities which were previously zero in minimal models.

Contribution

It introduces a method to compute hadronic electric and magnetic polarizabilities within ADS/CFT by including axial and vector mesons as intermediate states.

Findings

Effective vertices enable polarizability calculations.

Inclusion of meson propagation yields non-zero polarizabilities.

Model aligns better with experimental observations.

Abstract

ADS/CFT models have achieved considerable success in describing hadronic properties such as masses and Regge trajectories. Even if the minimal vertex that couples photons to structureless spin-zero fields is used, one still ends up with electromagnetic form factors of hadrons that are in fair to good agreement with experiment. However, contradicting both experiment and intuition, this minimal model gives zero for hadronic electric and magnetic polarizabilities. We show here that if effective vertices are used, and axial and vector mesons are allowed to propagate as intermediate states, then the static polarizabilities can in principle be computed from ADS/CFT.