Asymmetric D-braneworld
arXiv:hep-th/0408043 · doi:10.1103/PhysRevD.70.103507
Abstract
In recent papers on Randall-Sundrum D-braneworld model with Z_2 symmetry, it was shown that the effective gravity does not work as usual, that is, the gravity does not couple to the gauge field localised on the brane in a usual way. At first glance there are two possibilities to avoid this serious problem. One is to remove the Z_2 symmetry and another is to consider a non-BPS state. In this paper we analyze the Randall-Sundrum D-braneworld model without Z_2 symmetry by long wave approximation. The result is unexpected one, that is, the gauge field does not couple to the gravity on the brane in the leading order again. Therefore the remaining possibility to recover the conventional gravitational theory would be non-BPS cases.
6 pages
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