Orientifolds, Unoriented Instantons and Localization
Duiliu-Emanuel Diaconescu, Bogdan Florea, Aalok Misra
Abstract
We consider world-sheet instanton effects in N=1 string orientifolds of noncompact toric Calabi-Yau threefolds. We show that unoriented closed string topological amplitudes can be exactly computed using localization techniques for holomorphic maps with involution. Our results are in precise agreement with mirror symmetry and large N duality predictions.
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