Strong coupling in braneinduced gravity in five dimensions
Abstract
Braneinduced gravity in five dimensions (DvaliGabadadzePorrati model) exhibits modification of gravity at ultralarge distances, $r\gg r_c = M_{Pl}^2/M^3$ where $M$ is the fivedimensional gravity scale. This makes the model potentially interesting for explaining the observed acceleration of the Universe. We argue, however, that it has an intrinsic intermediate energy scale $(M^9/M_{Pl}^4)^{1/5}$. At higher energies, the model is strongly coupled. For $r_c$ of order of the present Hubble size, the strong coupling regime occurs at distanced below tens of metres.
 Publication:

arXiv eprints
 Pub Date:
 March 2003
 DOI:
 10.48550/arXiv.hepth/0303125
 arXiv:
 arXiv:hepth/0303125
 Bibcode:
 2003hep.th....3125R
 Keywords:

 High Energy Physics  Theory