Induced brane gravity: realizations and limitations

Details Induced brane gravity: realizations and limitations Induced brane gravity: realizations and limitations

2001-06-06

arxiv.org/abs/hep-th/0106050v3

JHEP 0108:012,2001

Physics

High Energy Physics

High Energy Physics - Theory

20 pages; (v2) The discussion on the D-brane realization has been refined. References added (v3) Title change and minor cosmet

Scientific paper

10.1088/1126-6708/2001/08/012

The induced 4d gravity on a brane world is analyzed. The case of a thick brane is considered and the unexpected appearance of a new threshold scale, much larger than the thickness scale is found. In cases of phenomenological interest, this new length scale turns out to be in the submillimeter range. The effect of $R^2$ corrections, both in the bulk and on the brane, is also studied. It is shown that they introduce new threshold scales and may induce drastic modifications to the leading behavior. A concrete string/D-brane realization of the induced gravity scenario is also presented.

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