D-branes and Normal Functions

@article{Morrison2007DbranesAN,
  title={D-branes and Normal Functions},
  author={David R. Morrison and Johannes Walcher},
  journal={arXiv: High Energy Physics - Theory},
  year={2007}
}
We explain the B-model origin of extended Picard-Fuchs equations satisfied by the D-brane superpotential on compact Calabi-Yau threefolds. Via the Abel-Jacobi map, the domainwall tension is identified with a Poincare normal function--a transversal holomorphic section of the Griffiths intermediate Jacobian. Within this formalism, we derive the extended Picard-Fuchs equation associated with the mirror of the real quintic. 

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