Non-BPS branes of supersymmetric brane worlds

We consider five-dimensional brane worlds with N = 2 gauged supergravity in the bulk coupled supersymmetrically to two boundary branes at the fixed po ints of a Z(2) symmetry. We analyse two mechanisms that break supersymmetry either by choosing flipped fermionic boundary conditions on the boundary b ranes or by modifying the gravitino variation to include both Z(2)-odd and Z(2)-even operators. In all cases we find the corresponding background. Inc luding an even part in the gravitino variation leads to tilted branes. Choo sing the flipped boundary conditions leads to AdS(4) branes and stabilized radion in the detuned case, when the expectation value of the even variatio n is nonzero. Another solution has the interpretation of moving AdS(4) bran es separated by a horizon. The solution with moving branes. separated by a horizon can be extended to the tuned case. In the presence of a horizon, te mperature mediation communicates supersymmetry breakdown to the branes. (C) 2001 Published by Elsevier Science B.V.