English

Modularity from Monodromy

High Energy Physics - Theory 2019-05-22 v1 Algebraic Geometry

Abstract

In this note we describe a method to calculate the action of a particular Fourier-Mukai transformation on a basis of brane charges on elliptically fibered Calabi-Yau threefolds with and without a section. The Fourier-Mukai kernel is the ideal sheaf of the relative diagonal and for fibrations that admit a section this is essentially the Poincar\'e sheaf. We find that in this case it induces an action of the modular group on the charges of 2-branes.

Cite

@article{arxiv.1902.08215,
  title  = {Modularity from Monodromy},
  author = {Thorsten Schimannek},
  journal= {arXiv preprint arXiv:1902.08215},
  year   = {2019}
}

Comments

19 pages

R2 v1 2026-06-23T07:47:32.898Z