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String loop corrections to the universal hypermultiplet

Abstract : We study loop corrections to the universal dilaton supermultiplet for type IIA strings compactified on Calabi-Yau threefolds. We show that the corresponding quaternionic kinetic terms receive non-trivial one-loop contributions proportional to the Euler number of the Calabi-Yau manifold, while the higher-loop corrections can be absorbed by field redefinitions. The corrected metric is no longer Kahler. Our analysis implies in particular that the Calabi-Yau volume is renormalized by loop effects which are present even in higher orders, while there are also one-loop corrections to the Bianchi identities for the NS and RR field strengths.
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Preprints, Working Papers, ...
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Contributor : Vanhove Pierre Connect in order to contact the contributor
Submitted on : Thursday, November 18, 2004 - 5:42:05 PM
Last modification on : Thursday, March 5, 2020 - 6:20:20 PM

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P. Vanhove, Ignatios Antoniadis, Stefan Theisen, Ruben Minasian. String loop corrections to the universal hypermultiplet. 2003. ⟨hal-00003318⟩



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