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We examine the potential strong coupling problem at early times in a bouncingcosmological model with "strong gravity in the past" (Jordan frame), which isconformally related to inflation (Einstein frame). From naive dimensionalanalysis in the Jordan frame one would conclude that the quantum strongcoupling energy scale can be lower than the classical energy scale. However,from the Einstein frame prospective this should not be the case. We illustratethis point by calculation in the Jordan frame which shows cancellations of thedangerous contributions in the tree level amplitude.

On the strong coupling problem in cosmologies with "strong gravity in the past"