Degenerate higher order scalar-tensor theories beyond Horndeski up to cubic order - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Journal of High Energy Physics Année : 2016

Degenerate higher order scalar-tensor theories beyond Horndeski up to cubic order

Résumé

We present all scalar-tensor Lagrangians that are cubic in second derivatives of a scalar field, and that are degenerate, hence avoiding Ostrogradsky instabilities. Thanks to the existence of constraints, they propagate no more than three degrees of freedom, despite having higher order equations of motion. We also determine the viable combinations of previously identified quadratic degenerate Lagrangians and the newly established cubic ones. Finally, we study whether the new theories are connected to known scalar-tensor theories such as Horndeski and beyond Horndeski, through conformal or disformal transformations

Dates et versions

hal-02312330 , version 1 (11-10-2019)

Identifiants

Citer

J. Ben Achour, Marco Crisostomi, K. Koyama, D. Langlois, K. Noui, et al.. Degenerate higher order scalar-tensor theories beyond Horndeski up to cubic order. Journal of High Energy Physics, 2016, 12, pp.100. ⟨10.1007/JHEP12(2016)100⟩. ⟨hal-02312330⟩
32 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More