On Instanton Effects in F-theory
Feb, 2010
49 pages
Published in:
- JHEP 08 (2010) 079
e-Print:
- 1002.1894 [hep-th]
Report number:
- MPP-2010-11,
- LMU-ASC-05-10
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Abstract: (arXiv)
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.Note:
- 52 pages, 8 figures, 13 tables; v2: extended discussion of matter zero modes, refs added; v3: sections 3.3 + 4.1 restructured
- F-Theory
- M-Theory
- Intersecting branes models
- F-theory: compactification
- instanton: correction
- instanton: effect
- fermion: matter
- zero mode
- nonperturbative
- superpotential
References(0)
Figures(7)
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