Zhi-Guo Liu, Yun-Song Piao
We show that the observational universe may emerge from a de Sitter background with low energy scale, without requiring a large upward tunneling. We find, after calculating the curvature perturbations, that the corresponding scenario is actually a style of the eternal inflation, in which some regions will go through the slowly expanding Galilean genesis phase with rapidly increasing energy density and become island universes, while other regions are still in the eternal inflation.
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http://arxiv.org/abs/1301.6833
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