General Brane Dynamics with R_{4} term in the Bulk

Details General Brane Dynamics with R_{4} term in the Bulk General Brane Dynamics with R_{4} term in the Bulk

2001-08-02

arxiv.org/abs/hep-th/0108013v4

JHEP 0108:034,2001

Physics

High Energy Physics

High Energy Physics - Theory

23 pages; one minor change

Scientific paper

10.1088/1126-6708/2001/08/034

A general analysis of the induced brane dynamics is performed when the intrinsic curvature term is included in the action. Such a term is known to cause dramatic changes and is generically induced by quantum corrections coming from the bulk gravity and its coupling with matter living on the brane. The induced brane dynamics is shown to be the usual Einstein dynamics coupled to a well defined modified energy-momentum tensor. In cosmology, conventional general relativity revives for an initial era whose duration depends on the value of the five-dimensional Planck mass. Violations of energy conditions may be possible, as well as matter inhomogeneities on the brane in (A)dS_{5} or Minkowski backgrounds. A new anisotropic cosmological solution is given in the above context. This solution, for a fine-tuned five-dimensional cosmological constant, exhibits an intermediate accelerating phase which is followed by an era corresponding to a 4D perfect fluid solution with no future horizons.

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