[HTML][HTML] BRST cohomology is Lie algebroid cohomology

W Jia, MS Klinger, RG Leigh - Nuclear Physics B, 2023 - Elsevier
In this paper we demonstrate that the exterior algebra of an Atiyah Lie algebroid generalizes
the familiar notions of the physicist's BRST complex. To reach this conclusion, we develop a …

Topics in Weyl Geometry and Quantum Anomalies

W Jia - arXiv preprint arXiv:2407.02695, 2024 - arxiv.org
The first part of this thesis focuses on the Weyl-covariant nature of holography. We
generalize the Fefferman-Graham (FG) ambient construction for conformal geometry to a …

The dressing field method of gauge symmetry reduction, a review with examples

J Attard, J François, S Lazzarini, T Masson - Foundations of mathematics …, 2018 - Springer
Gauge symmetries are a cornerstone of modern physics but they come with technical
difficulties when it comes to quantization, to accurately describe particles phenomenology or …

Tractors and Twistors from conformal Cartan geometry: a gauge theoretic approach I. Tractors

J Attard, J François - arXiv preprint arXiv:1609.07307, 2016 - arxiv.org
Tractors and Twistors bundles both provide natural conformally covariant calculi on $4 D $-
Riemannian manifolds. They have different origins but are closely related, and usually …

Weyl gravity and Cartan geometry

J Attard, J François, S Lazzarini - Physical Review D, 2016 - APS
We point out that the Cartan geometry known as the second-order conformal structure
provides a natural differential geometric framework underlying gauge theories of conformal …

Gauge Fixing in QFT and the Dressing Field Method

M Guillaud, S Lazzarini, T Masson - arXiv preprint arXiv:2406.19937, 2024 - arxiv.org
In this paper, we revisit the Dressing Field Method (DFM) in the context of Quantum (Gauge)
Field Theories (QFT). In order to adapt this method to the functional path integral formalism …

Tractors and Twistors from conformal Cartan geometry: a gauge theoretic approach II. Twistors

J Attard, J François - Classical and Quantum Gravity, 2017 - iopscience.iop.org
Tractor and Twistor bundles provide natural conformally covariant calculi on 4D-Riemannian
manifolds. They have different origins but are closely related, and usually constructed …

The dressing field method in gauge theories--geometric approach

M Zając - arXiv preprint arXiv:2105.09919, 2021 - arxiv.org
Recently, T. Masson, J. Francois, S. Lazzarini, C. Fournel and J. Attard have introduced a
new method of the reduction of gauge symmetry called a dressing field method. In this paper …

[HTML][HTML] A note on Weyl invariance in gravity and the Wess–Zumino functional

J Attard, S Lazzarini - Nuclear Physics B, 2016 - Elsevier
It is shown that the explicit calculation of the Wess–Zumino functional pertaining to the
breaking term of the Weyl symmetry for the Einstein–Hilbert action allows to restore the Weyl …

Conformal Gauge Theories, Cartan Geometry and Transitive Lie Algebroids

J Attard - 2018 - theses.hal.science
Our current knowledge about Universe rests on the existence of four fundamental
interactions. These are: gravitation, electromagnetism, weak interaction and strong …