Evidence for F-Theory
نویسنده
چکیده
We construct compact examples of D-manifolds for type IIB strings. The construction has a natural interpretation in terms of compactification of a 12 dimensional ‘F-theory’. We provide evidence for a more natural reformulation of type IIB theory in terms of Ftheory. Compactification of M-theory on a manifold K which admits elliptic fibration is equivalent to compactification of F-theory on K ×S. A large class of N = 1 theories in 6 dimensions are obtained by compactification of F-theory on Calabi-Yau threefolds. A class of phenomenologically promising compactifications of F-theory is on Spin(7) holonomy manifolds down to 4 dimensions. This may provide a concrete realization of Witten’s proposal for solving the cosmological constant problem in four dimensions.
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تاریخ انتشار 1996