Journal Article

A matrix model for the latitude Wilson loop in ABJM theory

Bianchi, Marco S., Griguolo, Luca, Seminara, Domenico, Mauri, Andrea, Penati, Silvia

2018

Overview

A bstract In ABJ(M) theory, we propose a matrix model for the exact evaluation of BPS Wilson loops on a latitude circular contour, so providing a new weak-strong interpolation tool. Intriguingly, the matrix model turns out to be a particular case of that computing torus knot invariants in U( N 1 | N 2 ) Chern-Simons theory. At weak coupling we check our proposal against a three-loop computation, performed for generic framing, winding number and representation. The matrix model is amenable of a Fermi gas formulation, which we use to systematically compute the strong coupling and genus expansions. For the fermionic Wilson loop the leading planar behavior agrees with a previous string theory prediction. For the bosonic operator our result provides a clue for finding the corresponding string dual configuration. Our matrix model is consistent with recent proposals for computing Bremsstrahlung functions exactly in terms of latitude Wilson loops. As a by-product, we extend the conjecture for the exact B 1/6 θ Bremsstrahlung function to generic representations and test it with a four-loop perturbative computation. Finally, we propose an exact prediction for B 1/2 at unequal gauge group ranks.

• Publisher: Springer Berlin Heidelberg,Springer Nature B.V,SpringerOpen
• Subject: AdS-CFT Correspondence / Bremsstrahlung / Chern-Simons Theories / Classical and Quantum Gravitation / Computation / Coupling / Elementary Particles / Forestry economics / High energy physics / Interpolation / Latitude / Mathematical models / Matrix Models / Methamphetamine / Operators (mathematics) / Physics / Physics and Astronomy / Quantum Field Theories / Quantum Field Theory / Quantum Physics / Regular Article - Theoretical Physics / Relativity Theory / Representations / String Theory / Toruses / Wilson, ’t Hooft and Polyakov loops