de Sitter Galileon
Apr, 2011
Citations per year
Abstract: (arXiv)
We generalize the Galileon symmetry and its relativistic extension to a de Sitter background. This is made possible by studying a probe-brane in a flat five-dimensional bulk using a de Sitter slicing. The generalized Lovelock invariants induced on the probe brane enjoy the induced Poincar\'e symmetry inherited from the bulk, while living on a de Sitter geometry. The non-relativistic limit of these invariants naturally maintain a generalized Galileon symmetry around de Sitter while being free of ghost-like pathologies. We comment briefly on the cosmology of these models and the extension to the AdS symmetry as well as generic FRW backgrounds.- background: de Sitter
- background: Robertson-Walker
- dimension: 5
- symmetry: Galilei
- cosmological model
- nonrelativistic
- membrane model
- anti-de Sitter
- invariance: Lovelock
- symmetry: Poincare
References(68)
Figures(0)