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Axion instanton for higher-derivative quantum gravity

AuthorsGonzález-Díaz, Pedro F.
Issue Date1989
CitationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 233: 85-88 (1989)
AbstractA new euclidean solution is obtained for an axion coupled to gravity with a curvature-squared term. This instanton describes the nucleation of a baby universe. It is shown that the effect of the R2-term is to suppress the interactions of baby universes. © 1989.
Identifiersdoi: 10.1016/0370-2693(89)90620-5
issn: 0370-2693
Appears in Collections:(CFMAC-IO) Artículos
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