How higher-spin gravity surpasses the spin-two barrier

Xavier Bekaert, Nicolas Boulanger, Per A. Sundell

Resultado de la investigación: Contribución a una revistaArtículo

112 Citas (Scopus)

Resumen

Aiming at nonexperts, the key mechanisms of higher-spin extensions of ordinary gravities in four dimensions and higher are explained. An overview of various no-go theorems for low-energy scattering of massless particles in flat spacetime is given. In doing so, a connection between the S-matrix and the Lagrangian approaches is made, exhibiting their relative advantages and weaknesses, after which potential loopholes for nontrivial massless dynamics are highlighted. Positive yes-go results for non-Abelian cubic higher-derivative vertices in constantly curved backgrounds are reviewed. Finally, how higher-spin symmetry can be reconciled with the equivalence principle in the presence of a cosmological constant leading to the Fradkin-Vasiliev vertices and Vasiliev's higher-spin gravity with its double perturbative expansion (in terms of numbers of fields and derivatives) is outlined.

Idioma originalInglés
Páginas (desde-hasta)987-1009
Número de páginas23
PublicaciónReviews of Modern Physics
Volumen84
N.º3
DOI
EstadoPublicada - 3 jul 2012

Áreas temáticas de ASJC Scopus

  • Física y astronomía (todo)

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