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arXiv · 1210.0581

Decoherence Problem in Ekpyrotic Phase

Chien-Yao Tseng
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Abstract

Quantum decoherence and the transition to semiclassical behavior during inflation has been extensively considered in the literature. In this paper, we use a simple model to analyze the same process in ekpyrosis. Our result is that the quantum to classical transition would not happen during an ekpyrotic phase even for superhorizon modes, and therefore the fluctuations cannot be interpreted as classical. This implies the prediction of scale-free power spectrum in ekpyrotic/cyclic universe model requires more inspection.

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Chien-Yao Tseng. 2012-10-04. Decoherence Problem in Ekpyrotic Phase. https://doi.org/10.1103/physrevd.87.023518

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