The failure of cosmological perturbation theory in the new ekpyrotic and cyclic ekpyrotic scenarios

Details The failure of cosmological perturbation theory in the new ekpyrotic and cyclic ekpyrotic scenarios The failure of cosmological perturbation theory in the new ekpyrotic and cyclic ekpyrotic scenarios

2001-09-29

arxiv.org/abs/hep-ph/0110007v4

Phys.Lett. B526 (2002) 173-178

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages. v2: Logic of the demonstration of non-linearity stated more explicitely. Remarks on non-singular bounces removed for

Scientific paper

10.1016/S0370-2693(01)01438-1

Cosmological perturbation theory fails in the new ekpyrotic and cyclic
ekpyrotic scenarios, before the scale factor of the Universe reaches zero. As a
result, a recently-proposed recipe for evolving the curvature perturbation
through the bounce in these scenarios cannot be justified.

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