DBI and the Galileon Reunited
Models of inflation with arbitrary interactions are now florishing for their non-gaussianity signatures. Among them the DBI model describing a probe-brane moving along an extra dimension is special as pathological quantum corrections are protected by the fundamental 5d Poincare symmetry. I will show how to extend the DBI model to the most general Lovelock invariant arising in 5 dimensions giving rise to a new set of inflationary models and establish a link with the Galileon in the non-relativistic limit.
University of Geneva
Speaker
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Claudia De Rham
