### 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 original | Inglés |
---|---|

Páginas (desde-hasta) | 987-1009 |

Número de páginas | 23 |

Publicación | Reviews of Modern Physics |

Volumen | 84 |

N.º | 3 |

DOI | |

Estado | Publicada - 3 jul 2012 |

### Áreas temáticas de ASJC Scopus

- Física y astronomía (todo)

## Huella Profundice en los temas de investigación de 'How higher-spin gravity surpasses the spin-two barrier'. En conjunto forman una huella única.

## Citar esto

*Reviews of Modern Physics*,

*84*(3), 987-1009. https://doi.org/10.1103/RevModPhys.84.987