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2017-10-06 - Article/Dans un journal avec peer-review - Anglais - 6 page(s)

De Filippi David , "Higher-spin gravity as a non-commutative gauge theory" in Belgian Physical Society Magazine, 2017/02, 19-24

  • Codes CREF : Physique théorique et mathématique (DI1210)
  • Instituts UMONS : Institut de Recherche sur les Systèmes Complexes (Complexys)
  • Centres UMONS : Algèbre, Géométrie et Interactions fondamentales (AGIF)

Abstract(s) :

(Anglais) Describing all the fundamental interactions altogether at the quantum level is one of the most challenging questions of modern physics. On the one hand, there exists a complete model, namely general relativity, describing gravitation at the classical level. On the other hand, there is a satisfactory theory, the standard model of particle physics, describing electromagnetic, weak and strong interactions at the quantum level. The story of the latter began with the attempts to describe electroweak interactions in a consistent way. Fermi’s proposal to do it faced some problems, later solved by Glashow, Salam and Weinberg with their introduction of new particles, the W and Z bosons, and new gauge interactions. There is a corresponding idea of addressing the problem of gravity by adding new gauge interactions and particles of spin higher than two. There is nowadays a unique set of equations of motion, written by Vasiliev, describing gravity coupled to infinitely many higher-spin fields. The purpose of this note is to communicate some ideas underlying this technical formulation that was studied in the master thesis of the author.