%0 Journal Article
%T On Brane Cosmology and Naked Singularities
%A Ph. Brax
%A A. C. Davis
%J Physics
%D 2001
%I arXiv
%R 10.1016/S0370-2693(01)00734-1
%X Brane-world singularities are analysed, emphasizing the case of supergravity in singular spaces where the singularity puzzle is naturally resolved. These naked singularities are either time-like or null, corresponding to the finite or infinite amount of conformal time that massless particles take in order to reach them. Quantum mechanically we show that the brane-world naked singularities are inconsistent. Indeed we find that time-like singularities are not wave-regular, so the time-evolution of wave packets is not uniquely defined in their vicinity, while null singularities absorb incoming radiation. Finally we stress that for supergravity in singular spaces there is a topological obstruction, whereby naked singularities are necessarily screened off by the second boundary brane.
%U http://arxiv.org/abs/hep-th/0105269v1