Chiral description of massive gravity Auteur(s): Alexandrov S., Krasnov Kirill, Speziale Simone (Article) Publié: Journal Of High Energy Physics, vol. 2013 p.068 (2013) Texte intégral en Openaccess : Ref HAL: hal-00766632_v1 Ref Arxiv: 1212.3614 DOI: 10.1007/JHEP06(2013)068 WoS: WOS:000321381800014 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 22 Citations Résumé: We propose and study a new first order version of the ghost-free massive gravity. Instead of metrics or tetrads, it uses a connection together with Plebanski's chiral 2-forms as fundamental variables, rendering the phase space structure similar to that of SU(2) gauge theories. The chiral description simplifies computations of the constraint algebra, and allows us to perform the complete canonical analysis of the system. In particular, we explicitly compute the secondary constraint and carry out the stabilization procedure, thus proving that in general the theory propagates 7 degrees of freedom, consistently with previous claims. Finally, we point out that the description in terms of 2-forms opens the door to an infinite class of ghost-free massive bi-gravity actions. Commentaires: 25 pages |