J. de Haro, J. Amoros, E. Elizalde
It has been claimed in a recent paper \cite{bbfhd12} that sudden singularities will survive in semiclassical gravity. This issue is here carefully reviewed, pointing out that such conclusion, even if valid under some specific conditions, does not generically stand. Subtraction of the zero-point vacuum oscillations is mandatory in order to properly renormalize the energy density. An explicit example is studied in detail to support the opposite conclusion that quantum effects may in fact drastically modify the behavior of sudden singularities.
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http://arxiv.org/abs/1204.4039
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