  We investigate some issues regarding quantum corrections for de Sitter branes
in a bulk AdS(5) spacetime. The one-loop effective action for a Majorana spinor
field is evaluated and compared with the scalar field result. We also evaluate
the cocycle function for various boundary conditions, finding that the quantum
corrections naturally induce higher order curvature terms in the original
action and, in general, it is not possible to eliminate the cocycle function by
renormalisation. In the one brane limit care must be taken on how one extracts
physical results. The effective potential is found to be zero on the
conformally related cylinder. However, using the actual metric, the
contribution from the cocycle function is non-zero and must be included.
Subtleties with any zero modes are also discussed.
