paper

Compactifications of F-Theory on Calabi--Yau Threefolds -- I

arXiv:hep-th/9602114 · doi:10.1016/0550-3213(96)00242-8

Abstract

We study compactifications of F-theory on certain Calabi--Yau threefolds. We find that dualities of type II/heterotic strings in 4 dimensions get promoted to dualities between heterotic string and F-theory in 6 dimensions. The six dimensional heterotic/heterotic duality becomes a classical geometric symmetry of the Calabi--Yau in the F-theory setup. Moreover the F-theory compactification sheds light on the nature of the strong coupling transition and what lies beyond the transition at finite values of heterotic string coupling constant.

24 pages + 1 figure. Minor corrections and reference added; final version to appear in Nuclear Physics B

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