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Instantons and wormholes in Minkowski and (A)dS spaces. (English) Zbl 1001.83050

Summary: Instanton and wormhole solutions are constructed in a \(d\)-dimensional gravity theory with an axion-dilaton pair of scalar fields. We discuss the cases of vanishing, positive and negative cosmological constant.

MSC:

83D05 Relativistic gravitational theories other than Einstein’s, including asymmetric field theories
83C15 Exact solutions to problems in general relativity and gravitational theory

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