F-theory uplifts and GUTs

JOURNAL OF HIGH ENERGY PHYSICS, (2009)

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We study the F-theory uplift of Type IIB orientifold models on compact Calabi-Yau threefolds containing divisors which are del Pezzo surfaces. We consider two examples defined via del Pezzo transitions of the quintic. The first model has an orientifold projection leading to two disjoint O7-planes and the second involution acts via an exch...更多

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