Publication : t03/088

String loop corrections to the universal hypermultiplet

Antoniadis I. (Theory Division, European Organization for Nuclear Research, CERN, CH-1211 Genève 23, Switzerland (Suisse))
Minasian R. (Centre de Physique Théorique (CPhT), CNRS, Ecole Polytechnique, F-91128 Palaiseau, France)
Theisen S. (Max Planck Institut für Gravitationsphysik Albert Einstein Institut, Am Mühlenberg 1, D-14476 Golm, GERMANY)
Vanhove P. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)
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.
Année de publication : 2003
Revue : Class. Quantum Grav. 20 5079-5102 (2003)
DOI : 10.1088/0264-9381/20/23/009
Preprint : arXiv:hep-th/0307268
Lien :
PACS : 04.65.+e
Numéro Exterieur : AEI-2003-052 ; CPHT-RR030.0603 ; CERN-TH/2003-139
Langue : Anglais

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