modified gravity;
cosmological applications of theories with extra dimensions;
GRAVITY;
EQUATIONS;
SPACE;
D O I:
10.1088/1475-7516/2011/05/025
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
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 Poincare 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.
机构:
Univ Paris 07, Observ Paris, CEA, CNRS,APC,UMR 7164, F-75205 Paris 13, FranceUniv Paris 07, Observ Paris, CEA, CNRS,APC,UMR 7164, F-75205 Paris 13, France
Deffayet, C.
;
Ziour, R.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Paris 07, Observ Paris, CEA, CNRS,APC,UMR 7164, F-75205 Paris 13, FranceUniv Paris 07, Observ Paris, CEA, CNRS,APC,UMR 7164, F-75205 Paris 13, France
Ziour, R.
.
INTERNATIONAL JOURNAL OF MODERN PHYSICS D,
2009,18(14)
:2147-2154
机构:
Univ Paris 07, Observ Paris, CEA, CNRS,APC,UMR 7164, F-75205 Paris 13, FranceUniv Paris 07, Observ Paris, CEA, CNRS,APC,UMR 7164, F-75205 Paris 13, France
Deffayet, C.
;
Ziour, R.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Paris 07, Observ Paris, CEA, CNRS,APC,UMR 7164, F-75205 Paris 13, FranceUniv Paris 07, Observ Paris, CEA, CNRS,APC,UMR 7164, F-75205 Paris 13, France
Ziour, R.
.
INTERNATIONAL JOURNAL OF MODERN PHYSICS D,
2009,18(14)
:2147-2154