Publication : t97/193

Heterotic/type I duality and D-brane instantons

Bachas C. (Centre de Physique Théorique (CPhT), CNRS, Ecole Polytechnique, F-91128 Palaiseau, France)
Fabre C. (Centre de Physique Théorique (CPhT), CNRS, Ecole Polytechnique, F-91128 Palaiseau, France)
Kiritsis E. (Theory Division, European Organization for Nuclear Research, CERN, CH-1211 Genève 23, Switzerland (Suisse))
Obers N.A. (Theory Division, European Organization for Nuclear Research, CERN, CH-1211 Genève 23, Switzerland (Suisse))
Vanhove P. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)
Abstract:
We study heterotic/type I duality in $d=8,9$ uncompactified dimensions. We consider the special (``BPS saturated'') ${\cal F}^4$ and ${\cal R}^4$ terms in the effective one-loop heterotic action, which are expected to be non-perturbatively exact. Under the standard duality map these translate to tree-level, perturbative and non-perturbative contributions on the type I side. We check agreement with the one-loop open string calculation, and discuss the higher-order perturbative contributions, which arise because of the mild non-holomorphicities of the heterotic elliptic genus. We put the heterotic world-sheet instanton corrections in a form that can be motivated as arising from a D-brane instanton calculation on the type I side.
Année de publication : 1998
Publication extérieure au service
Revue : Nucl. Phys. B 509 33-52 (1998)
DOI : 10.1016/S0550-3213(97)00639-1
Preprint : arXiv:hep-th/9707126
Numéro Exterieur : CERN-TH/97-65-July-1997
Langue : Anglais
NB : 509, 33-40 (1998)

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