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arXiv · 1002.1894

On Instanton Effects in F-theory

Ralph Blumenhagen·Andres Collinucci·Benjamin Jurke
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Abstract

We revisit the issue of M5-brane instanton corrections to the superpotential in F-theory compactifications on elliptically fibered Calabi-Yau fourfolds. Elaborating on concrete geometries, we compare the instanton zero modes for non-perturbative F-theory models with the zero modes in their perturbative Sen limit. The fermionic matter zero modes localized on the intersection of the instanton with the space-time filling D7-branes show up in a geometric way in F-theory. Methods for their computation are developed and, not surprisingly, exceptional gauge group structures do appear. Finally, quite intriguing geometrical aspects of the one-loop determinant are discussed.

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Ralph Blumenhagen, Andres Collinucci, Benjamin Jurke. 2010-06-23. On Instanton Effects in F-theory. https://doi.org/10.1007/jhep08(2010)079

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