De Sitter Galileon

Journal Article · Sun May 01 00:00:00 EDT 2011 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2011/05/025· OSTI ID:22277666

Burrage, Clare; Rham, Claudia de; Heisenberg, Lavinia ^[1]

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1. Départment de Physique Théorique, Université de Genève, 24 Quai E. Ansermet, CH-1211, Genève (Switzerland)

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 Poincaré 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.

• OSTI ID: 22277666
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 05 Vol. 2011; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ANTI DE SITTER GROUP
ANTI DE SITTER SPACE
BRANES
COSMOLOGICAL MODELS
COSMOLOGY
MANY-DIMENSIONAL CALCULATIONS
PROBES
RELATIVISTIC RANGE