An Orientifold from F Theory
نویسندگان
چکیده
The massless spectrum of an orientifold of the IIB string theory is computed and shown to be identical to F theory on the Calabi-Yau threefold with h11 = 51 and h21 = 3. Target space duality is also considered in this model.
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F -theory and Orientifolds
By analyzing F-theory on K3 near the orbifold limit of K3 we establish the equivalence between F-theory on K3 and an orientifold of type IIB on T 2 , which in turn, is related by a T-duality transformation to type I theory on T 2. By analyzing the F-theory background away from the orbifold limit, we show that non-perturbative effects in the orientifold theory splits an orientifold plane into tw...
متن کامل0 v 1 2 2 M ay 1 99 6 hep - th / 9605150 MRI - PHY / 96 - 14 F - theory and
By analyzing F-theory on K3 near the orbifold limit of K3 we establish the equivalence between F-theory on K3 and an orientifold of type IIB on T 2 , which in turn, is related by a T-duality transformation to type I theory on T 2. By analyzing the F-theory background away from the orbifold limit, we show that non-perturbative effects in the orientifold theory splits an orientifold plane into tw...
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