Spin-field Interaction Effects and Loop Dynamics in AdS/CFT Duality

TL;DR

This paper investigates how spin-field interactions influence loop dynamics within the AdS/CFT duality framework, using a worldline approach and sigma model analysis to understand perturbative and non-perturbative effects at strong coupling.

Contribution

It introduces a novel analysis of spin effects in Wilson loops via the spin factor, incorporating dynamical effects in the AdS/CFT context using established methodological tools.

Findings

Modification of the spin factor due to dynamical effects

Perturbative and non-perturbative contributions analyzed

Insights into loop dynamics in AdS/CFT duality

Abstract

The spin-field interaction is considered, in the context of the gauge fields/string correspondence, in the large 't Hooft coupling limit. The latter can be viewed as a WKB-type approximation to the AdS/CFT duality conjecture. Basic theoretical objects entering the present study are (a) the Wilson loop functional, on the gauge field side and (b) the sigma model action for the string propagating in AdS$_5$. Spin effects are introduced in a worldline setting, via the spin factor for a particle entity propagating on a Wilson loop contour. The computational tools employed for conducting the relevant analysis, follow the methodological guidelines introduced in two papers by Polyakov and Rychkov. The main result is expressed in terms of the modification of the spin factor brought about by dynamical effects, both perturbative and non-perturbative, according to AdS/CFT in the considered limit.