Numerical Hermitian Yang-Mills Connections and Kahler Cone Substructure

Details Numerical Hermitian Yang-Mills Connections and Kahler Cone Substructure Numerical Hermitian Yang-Mills Connections and Kahler Cone Substructure

2011-03-15

arxiv.org/abs/1103.3041v1

Physics

High Energy Physics

High Energy Physics - Theory

38 pages, 10 figures

Scientific paper

We further develop the numerical algorithm for computing the gauge connection of slope-stable holomorphic vector bundles on Calabi-Yau manifolds. In particular, recent work on the generalized Donaldson algorithm is extended to bundles with Kahler cone substructure on manifolds with h^{1,1}>1. Since the computation depends only on a one-dimensional ray in the Kahler moduli space, it can probe slope-stability regardless of the size of h^{1,1}. Suitably normalized error measures are introduced to quantitatively compare results for different directions in Kahler moduli space. A significantly improved numerical integration procedure based on adaptive refinements is described and implemented. Finally, an efficient numerical check is proposed for determining whether or not a vector bundle is slope-stable without computing its full connection.

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