Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-09-15
JCAP 12 (2011) 004
Physics
High Energy Physics
High Energy Physics - Theory
28 pages, 1 figure
Scientific paper
10.1088/1475-7516/2011/12/004
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.
Goon Garrett
Hinterbichler Kurt
Trodden Mark
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