Abstract
We propose a modified form of the spontaneousbirth of the universe by quantum tunneling. It proceedsthrough topology change and inflation, to eventuallybecome a universe with closed spatial sections of negative spatial curvature and nontrivialglobal topology.
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Da Costa, S.S., Fagundes, H.V. Birth of a Closed Universe of Negative Spatial Curvature. General Relativity and Gravitation 31, 863–868 (1999). https://doi.org/10.1023/A:1026686221314
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DOI: https://doi.org/10.1023/A:1026686221314