Decoherence Problem in Ekpyrotic Phase
High Energy Physics - Theory
2013-05-30 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
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.
Cite
@article{arxiv.1210.0581,
title = {Decoherence Problem in Ekpyrotic Phase},
author = {Chien-Yao Tseng},
journal= {arXiv preprint arXiv:1210.0581},
year = {2013}
}
Comments
8 pages, 3 figures, 1 table; modify the wordings of some well-known results in the introduction part