Noncommutative Gauge Theories: Yang-Mills extensions and beyond - An overview
Jean-Christophe Wallet
TL;DR
Addressing gauge theories on noncommutative space-times, the paper surveys Yang–Mills extensions and matrix-model formulations built from $\star$-products and a derivation-based differential calculus. It spans Moyal spaces $\mathbb{R}^{2n}_\theta$, deformed $\mathbb{R}^3_\lambda$, and Lie-algebraic Minkowski deformations ($\rho$- and $\kappa$-Minkowski), comparing methods based on Hopf-algebra twists with Weyl quantization. A key highlight is the all-orders finiteness of a class of gauge-invariant constructions on $\mathbb{R}^3_\lambda$ with harmonic terms, alongside persistent obstacles such as UV/IR mixing and 1-loop tadpoles in many 4D and Minkowski-space models. The work clarifies the symmetry structures, gauge dynamics, and potential avenues—including twisted traces and braided $L_\infty$-formalisms—for connecting noncommutative gauge theories to quantum gravity frameworks like Group Field Theory.
Abstract
The status of several representative gauge theories on various quantum space-times, mainly focusing on Yang-Mills type extensions together with a few matrix model formulations is overviewed. The common building blocks are derivation based differential calculus possibly twisted and noncommutative analog of the Koszul connection. The star-products related to the quantum space-times are obtained from a combination of harmonic analysis of group algebras combined with Weyl quantization. The remaining problems inherent to gauge theories on Moyal spaces in their two different formulations are outlined. A family of gauge invariant matrix models on $\mathbb{R}^3_λ$, a deformation of $\mathbb{R}^3$ is presented among which a solvable model. The characterization of 11 new quantum Minkowski space-times through their $*$-algebras is given. A gauge theory of Yang-Mills type is constructed on one recently explored of these space-times and compared to its counterpart built on the popular $κ$-Minkowski.
