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Covariant master theory for novel Galilean invariant models and massive gravity
2012
Physical Review D
Coupling the galileons to a curved background has been a tradeoff between maintaining second order equations of motion, maintaining the galilean shift symmetries, and allowing the background metric to be dynamical. We propose a construction which can achieve all three for a novel class of galilean invariant models, by coupling a scalar with the galilean symmetry to a massive graviton. This generalizes the brane construction for galileons, by adding to the brane a dynamical metric,
doi:10.1103/physrevd.86.124004
fatcat:p2tv62bgzfb7jhvyr5xufodbnu