Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-08-10
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, Latex, no figures
Scientific paper
An alternative approach to introducing gravitational dynamics on a brane embedded in a higher dimensional spacetime is presented. The brane is treated as a boundary of a higher dimensional manifold in which the bulk action is described by a metric independent topological quantum field theory. The example of a five dimensional non-Abelian BF theory with a boundary brane is considered. A natural boundary condition is adopted chosen for consistency of the topological action despite the presence of a boundary. The resulting effective action on the brane is the action of general relativity in first order form plus terms involving the extrinsic curvature of the brane.
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