Galileons on cosmological backgrounds

Journal Article · Wed Nov 30 23:00:00 EST 2011 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2011/12/004· OSTI ID:22279712

Goon, Garrett; Hinterbichler, Kurt; Trodden, Mark ^[1]

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1. Center for Particle Cosmology, Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)

We construct four-dimensional effective field theories of a generalized DBI galileon field, the dynamics of which naturally take place on a Friedmann-Robertson-Walker spacetime. The theories are invariant under non-linear symmetry transformations, which can be thought of as being inherited from five-dimensional bulk Killing symmetries via the probe brane technique through which they are constructed. The resulting model provides a framework in which to explore the cosmological role that galileons may play as the universe evolves.

• OSTI ID: 22279712
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 12 Vol. 2011; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
BRANES
COSMOLOGICAL MODELS
COSMOLOGY
FIELD THEORIES
FOUR-DIMENSIONAL CALCULATIONS
NONLINEAR PROBLEMS
SPACE-TIME
SYMMETRY
TRANSFORMATIONS
UNIVERSE