Wormholes in Maximal Supergravity
نویسندگان
چکیده
In this brief note, we reconsider the problem of finding Euclidean wormhole solutions to maximal supergravity in d dimensions. We find that such solutions exists for all d ≤ 9. However, we argue that, in toroidally-compactified string theories, these saddle points never contribute to the path integral because of a tension with U-duality. Research supported by NSF Grants PHY-0505757, PHY-0555575 and by Texas A&M Univ. Research supported in part by NSF Grant PHY-0455649.
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