Chern-Simons Field Theories in the Coulomb Gauge

TL;DR

This paper investigates the quantization and perturbative properties of Chern-Simons field theories in the Coulomb gauge, demonstrating their consistency, triviality of commutation relations at tree level, and absence of radiative corrections.

Contribution

It provides a detailed analysis of the quantization, commutation relations, and perturbative behavior of Chern-Simons theories in the Coulomb gauge, including explicit Feynman rules derivation.

Findings

Commutation relations are trivial at any perturbative order without matter couplings.

No radiative contributions to n-point correlation functions are found.

Feynman rules are derived for a 3D manifold with a Riemann surface.

Abstract

In this talk some recent results in the quantization of Chern-Simons field theories in the Coulomb gauge will be presented. In the first part, the consistency of the Chern-Simons field theories in this gauge is proven using the Dirac's canonical formalism for constrained systems. Despite the presence of non-trivial self-interactions in the gauge fixed functional, it will be shown that the commutation relations between the fields are trivial at any perturbative order in the absence of couplings with matter fields. If these couplings are present, instead, the commutation relations become rather involved, but it is still possible to study their main properties and to show that they vanish at the tree level. In the second part of the talk the perturbative aspects of Chern-Simons field theories in the Coulomb gauge will be analysed. In particular, it will be shown by explicit computations and in a regularization independent way that there are no radiative contributions to the $n-$point correlation functions. Finally the Feynman rules in the Coulomb gauge will be derived on a three dimensional manifold with a spatial section given by a closed and orientable Riemann surface.