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Stability in and of de Sitter space
Published 17 Nov 2009 in hep-th and gr-qc | (0911.3142v2)
Abstract: We demonstrate that possession of a single negative mode is not a sufficient criterion for an instanton to mediate exponential decay. For example, de Sitter space is generically stable against decay via the Coleman-De Luccia instanton. This is due to the fact that the de Sitter Euclidean action is bounded below, allowing for an approximately de Sitter invariant false vacuum to be constructed.
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