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 fibrations used by Aluffi and Esole as well as a new, simple, fibration which has non-Kodaira type fibers. © 2011 SISSA.
A new CY elliptic fibration and tadpole cancellation
Cattaneo A.;
2011
Abstract
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 fibrations used by Aluffi and Esole as well as a new, simple, fibration which has non-Kodaira type fibers. © 2011 SISSA.File in questo prodotto:
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