Covariant Galileon
Top Cited Papers
- 3 April 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 79 (8), 084003
- https://doi.org/10.1103/physrevd.79.084003
Abstract
We consider the recently introduced “Galileon” field in a dynamical spacetime. When the Galileon is assumed to be minimally coupled to the metric, we underline that both field equations of the Galileon and the metric involve up to third-order derivatives. We show that a unique nonminimal coupling of the Galileon to curvature eliminates all higher derivatives in all field equations, hence yielding second-order equations, without any extra propagating degree of freedom. The resulting theory breaks the generalized “Galilean” invariance of the original model.Keywords
Other Versions
This publication has 11 references indexed in Scilit:
- xPerm: fast index canonicalization for tensor computer algebraComputer Physics Communications, 2008
- Degravitation of the cosmological constant and graviton widthPhysical Review D, 2007
- Avoiding Dark Energy with 1/R Modifications of GravityPublished by Springer Science and Business Media LLC ,2007
- Ghosts in massive gravityJournal of High Energy Physics, 2005
- Ghosts, strong coupling, and accidental symmetries in massive gravityPhysical Review D, 2005
- Classical and Quantum Consistency of the DGP ModelJournal of High Energy Physics, 2004
- Strong interactions and stability in the DGP modelJournal of High Energy Physics, 2003
- Accelerated universe from gravity leaking to extra dimensionsPhysical Review D, 2002
- Cosmology on a brane in Minkowski bulkPhysics Letters B, 2001
- 4D gravity on a brane in 5D Minkowski spacePhysics Letters B, 2000