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Open Universes, Eternal Inflation, and the Anthropic Principle

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Abstract

Models of open inflation with a variable densityparameter Ω provide the most natural way toreconcile an open universe with inflation. The use ofthe anthropic principle is essential to deriveobservational predictions of such models. I discuss how thisprinciple can be used in a quantitative way to determinethe most probable value of Ω. Application to moregeneral models of eternal inflation is also briefly discussed.

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  1. Alexander Vilenkin
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Vilenkin, A. Open Universes, Eternal Inflation, and the Anthropic Principle. International Journal of Theoretical Physics 38, 3135–3145 (1999). https://doi.org/10.1023/A:1026676619883

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