Yukawa couplings for intersecting D-branes on non-factorisable tori.
We compute Yukawa couplings in type IIa string theory compactified on a six-torus in the presence of intersecting D6-branes. The six-torus is generated by an SO(12) root lattice. Yukawa couplings are expressed as sums over worldsheet instantons. Our result extends known expressions to a non-factorisable torus. As an aside we also fill in some details for the factorisable torus and non-coprime intersection numbers.
Publisher URL: http://arxiv.org/abs/1412.3645
DOI: arXiv:1412.3645v4
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