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2018-10-31 - Colloque/Article dans les actes avec comité de lecture - Anglais - 10 page(s)

Campoleoni Andrea , Francia Dario, Heissenberg Carlo, "Asymptotic symmetries and charges at null infinity: from low to high spins" in XXth International Seminar on High Energy Physics (QUARKS-2018), 191, 06011, Valday, Russia, 2018

  • Codes CREF : Physique théorique et mathématique (DI1210)
  • Unités de recherche UMONS : Physique de l'Univers, Champs et Gravitation (S827)
  • Instituts UMONS : Institut de Recherche sur les Systèmes Complexes (Complexys)
  • Centres UMONS : Algèbre, Géométrie et Interactions fondamentales (AGIF)
Texte intégral :

Abstract(s) :

(Anglais) Weinberg's celebrated factorisation theorem holds for soft quanta of arbitrary integer spin. The same result, for spin one and two, has been rederived assuming that the infinite-dimensional asymptotic symmetry group of Maxwell's equations and of asymptotically flat spaces leave the S-matrix invariant. For higher spins, on the other hand, no such infinite-dimensional asymptotic symmetries were known and, correspondingly, no a priori derivation of Weinberg’s theorem could be conjectured. In this contribution we review the identification of higher-spin supertranslations and superrotations in D = 4 as well as their connection to Weinberg's result. While the procedure we follow can be shown to be consistent in any D, no infinite-dimensional enhancement of the asymptotic symmetry group emerges from it in D > 4, thus leaving a number of questions unanswered.

Identifiants :
  • DOI : 10.1051/epjconf/201819106011
  • arXiv : 1808.01542 [hep-th]