Quantum creation of traversable wormholes ex nihilo in Gauss-Bonnet-dilaton gravity

Abstract

We investigate a nucleation of a Euclidean wormhole and its analytic continuation to Lorentzian signatures in Gauss-Bonnet-dilaton gravity, where this model can be embedded by the type-II superstring theory. We show that there exists a Euclidean wormhole solution in this model by choosing a suitable shape of the dilaton potential. After the analytic continuation, this explains a quantum creation of a time-like traversable wormhole. Finally, we discuss relations to the information loss problem and the current literature.

14 pages, 8 figures

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• Dynamical analysis in regularized $4D$ Einstein-Gauss-Bonnet gravity with non-minimal coupling
• Fuzzy instantons in landscape and swampland: review of the Hartle-Hawking wave function and several applications
• Wormhole inducing inflation with Einstein Gauss Bonnet dilaton interaction
• Gravitational collapse involving electric charge in the decoupling limit of the dilatonic Gauss--Bonnet gravity