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Instantons and infinite distances

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arxiv 1904.04848 v3 pith:TCLMRRTP submitted 2019-04-09 hep-th

Fernando Marchesano , Max Wiesner This is my paper · ORCID
classification hep-th
keywords infinitedistancemodulispaceconsiderdilatonfinitelarge
verification ladder T0 review T1 audit T2 compute T3 formal
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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.

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Cited by 7 Pith papers

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