A new CY elliptic fibration and tadpole cancellation

Details A new CY elliptic fibration and tadpole cancellation A new CY elliptic fibration and tadpole cancellation

2011-07-18

arxiv.org/abs/1107.3589v2

JHEP 1110 (2011) 031

Physics

High Energy Physics

High Energy Physics - Theory

18 pages; added references and minor changes

Scientific paper

Tadpole cancellation in Sen limits in F-theory was recently studied by Aluffi and Esole. We extend their results, generalizing the elliptic fibrations they used and obtaining a new case of universal tadpole cancellation, at least numerically. We could not find an actual Sen limit having the correct brane content, and we argue that such a limit may not exist. We also give a uniform description of the fibration used by Aluffi and Esole as well as a new, simple, fibration which has non-Kodaira type fibers.

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