Instantons and infinite distances
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Publication:2273439
DOI10.1007/JHEP08(2019)088zbMATH Open1421.83121arXiv1904.04848OpenAlexW2936193617WikidataQ127353411 ScholiaQ127353411MaRDI QIDQ2273439
Author name not available (Why is that?)
Publication date: 23 September 2019
Published in: (Search for Journal in Brave)
Abstract: We consider geodesics of infinite length and constant 4d dilaton in the (classical) hypermultiplet moduli space of type II Calabi-Yau compactifications. When approaching such infinite distance points, a large amount of D-instantons develop an exponentially suppressed action, substantially modifying the moduli space metric. We consider a particular large volume/strong coupling trajectory for which, in the corrected metric, the path length becomes finite. The instanton effects also modify the cllassical 4d dilaton such that, in order to keep the 4d Planck mass finite, the string scale has to be lowered. Our results can be related, via the c-map, to the physics around points of infinite distance in the vector multiplet moduli space where the Swampland Distance Conjecture and the Emergence Proposal have been discussed, and provide further evidence for them.
Full work available at URL: https://arxiv.org/abs/1904.04848
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