Emitted Radiation and Geometry

TL;DR

This paper explores the relationship between emitted radiation, Wilson loops, and stress tensor one-point functions in conformal  Super Yang-Mills theory on an ellipsoid, revealing new geometric and perturbative insights.

Contribution

It proves a conjectured relation between stress tensor one-point functions and Wilson loop expansions under geometric deformation in  SYM theory.

Findings

Established a relation between stress tensor one-point function and Wilson loop expansion.

Analyzed Wilson loop behavior under small geometric deformations.

Identified a transcendentality-driven organization in weak coupling perturbative expansion.

Abstract

In conformal $\mathcal{N}=2$ Super Yang-Mills theory, the energy emitted by an accelerated heavy particle is computed by the one-point function of the stress tensor operator in the presence of a Wilson line. In this paper, we consider the theory on the ellipsoid and we prove a conjectured relation between the stress tensor one-point function and the first order expansion of the Wilson loop expectation value in the squashing parameter. To do this, we analyze the behavior of the Wilson loop for a small deformation of the background geometry and, at first order in the deformation, we fix the kinematics using defect CFT constraints. In the final part of the paper, we analyze the consequences of our results for the weak coupling perturbative expansion. In particular, comparing the weakly coupled matrix model with the ordinary Feynman diagram expansion, we find a natural transcendentality driven organization for the latter.