Galileons on Cosmological Backgrounds
High Energy Physics - Theory
2011-12-07 v1 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
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.
Cite
@article{arxiv.1109.3450,
title = {Galileons on Cosmological Backgrounds},
author = {Garrett Goon and Kurt Hinterbichler and Mark Trodden},
journal= {arXiv preprint arXiv:1109.3450},
year = {2011}
}
Comments
28 pages, 1 figure