D-brane instantons on non-Spin cycles
classification
✦ hep-th
keywords
instantonsnon-spincyclesd-braneassociatedbundlecalabi-yaucompactifications
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We show that non-Spin cycles in type IIB Calabi-Yau orientifold compactifications with vanishing B field naturally support orientifold-invariant D-brane instantons. These instantons, associated to the holomorphic cotangent bundle of the non-Spin cycle, can lead to non-perturbative corrections to the superpotential.
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