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2016-12-01 - Livre/Chapitre ou partie - Anglais - 41 page(s)

Arias Cesar, Bonezzi Roberto, Boulanger Nicolas , Sezgin Ergin, Sundell Per, Torres-Gomez Alexander, Valenzuela Mauricio, "Action principles for higher and fractional spin gravities" in "Higher Spin Gauge Theories" , Brink Lars, Henneaux Marc, Vasiliev Mikhail A., 978-981-3144-09-5

  • Edition : World Scientific (Singapore)
  • Codes CREF : Géométrie riemannienne, intégrale, symplectique et de poisson (DI1117), Physique théorique et mathématique (DI1210), Mécanique quantique classique et relativiste (DI1211), Gravitation (DI1216), Théorie quantique des champs (DI1215)
  • Unités de recherche UMONS : Physique théorique et mathématique (S814), Mécanique et gravitation (S884S)
  • Instituts UMONS : Institut de Recherche sur les Systèmes Complexes (Complexys)
  • Centres UMONS : Algèbre, Géométrie et Interactions fondamentales (AGIF)
Texte intégral :

Abstract(s) :

(Anglais) We review various off-shell formulations for interacting higher-spin systems in dimensions 3 and 4. Associated with higher-spin systems in spacetime dimension 4 is a Chern–Simons action for a superconnection taking its values in a direct product of an infinite-dimensional algebra of oscillators and a Frobenius algebra. A crucial ingredient of the model is that it elevates the rigid closed and central two-form of Vasiliev’s theory to a dynamical 2-form and doubles the higher-spin algebra, thereby considerably reducing the number of possible higher spin invariants and giving a nonzero effective functional on-shell. The two action principles we give for higher-spin systems in 3D are based on Chern–Simons and BF models. In the first case, the theory we give unifies higher-spin gauge fields with fractional-spin fields and an internal sector. In particular, Newton–s constant is related to the coupling constant of the internal sector. In the second case, the BF action we review gives the fully nonlinear Prokushkin–Vasiliev, bosonic equations for matter-coupled higher spins in 3D. We present the truncation to a single, real matter field relevant in the Gaberdiel–Gopakumar holographic duality. The link between the various actions we present is the fact that they all borrow ingredients from Topological Field Theory. It has been conjectured that there is an underlying and unifying 2-dimensional first-quantised description of the previous higher-spin models in 3D and 4D, in the form of a Cattaneo–Felder-like topological action containing fermionic fields.

Identifiants :
  • arXiv : 1603.04454
  • DOI : 10.1142/9789813144101_0012

Mots-clés :
  • (Anglais) higher-spin gravity