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hep-th2026
Geometric tool kit for higher spin gravity (part III): An introduction to the general theory of connections on fibre bundles
Xavier Bekaert
These notes provides an introduction to a wide variety of notions of connection that appear in the contemporary mathematical literature. Besides the familiar Ehresmann connections…
hep-th2026
Spinor-helicity formalism for continuous-spin particles
Thomas Basile, Xavier Bekaert, Felipe Figueroa +1
We propose a new formulation of continuous-spin particles (CSP) with the help of a single two-component spinor to build asymptotic states. This formulation allows to write down amp…
hep-th2026
A geometrical invitation to BMS group theory
Xavier Bekaert, Yannick Herfray, Lea Mele +1
In these lecture notes, a group-theoretical introduction to BMS symmetries is provided in a self-contained manner. More precisely, all definitions and structures are purely based o…