Sudden singularities survive massive quantum particle production

@article{Barrow2011SuddenSS,
  title={Sudden singularities survive massive quantum particle production},
  author={J. Barrow and A. B. Batista and G. Dito and J. Fabris and M. Houndjo},
  journal={Physical Review D},
  year={2011},
  volume={84},
  pages={123518}
}
We solve the Klein-Gordon equation for a massive, non-minimally coupled scalar field, with a conformal coupling, undergoing cosmological evolution from a radiation-dominated phase to a future sudden singularity. We show that, after regularisation, the energy of the created particles is zero and the back-reaction from quantum effects does not change the evolution of the universe near the future singularity and cannot prevent the finite-time sudden singularity. 
Wave asymptotics at a cosmological time-singularity
Creation of particles in a cyclic universe driven by loop quantum cosmology
Quantum cosmology and late-time singularities
Structure of infinity in cosmology
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