The strong coupling effect and auxiliary fields in the DGP-model
arXiv:hep-th/0506020 · doi:10.1103/PhysRevD.72.084010
Abstract
The DGP-model with additional terms in the action is considered. These terms have a special form and include auxiliary scalar fields without kinetic terms, which are non-minimally coupled to gravity. The use of these fields allows one to exclude the mode, which corresponds to the strong coupling effect, from the theory. Effective four-dimensional theory on the brane appears to be the same, as in the original DGP-model.
9 pages, LaTeX