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

Tumurtushaa, Gansukh (Aff1, 0000 0004 1784 4496, grid.410720.0, Center for Theoretical Physics of the Universe, Institute for Basic Science, 34051, Daejeon, Republic of Korea) ; Yeom, Dong-han  (Aff2, 0000 0000 8644 9730, grid.482264.e, Asia Pacific Center for Theoretical Physics, 37673, Pohang, Republic of Korea) (Aff3, 0000 0001 0742 4007, grid.49100.3c, Department of Physics, POSTECH, 37673, Pohang, Republic of Korea) (Aff4, 0000 0001 0719 8572, grid.262229.f, Department of Physics Education, Pusan National University, 46241, Busan, Republic of Korea) (Aff5, 0000 0001 0719 8572, grid.262229.f, Research Center for Dielectric and Advanced Matter Physics, Pusan National University, 46241, Busan, Republic of Korea)

11 June 2019

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.


Published in: EPJC 79 (2019) 488 DOI: 10.1140/epjc/s10052-019-7011-1
License: CC-BY-3.0



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