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arXiv 1403.7825math.DG
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非紧曲线上平坦向量丛上的Poisson度量

Poisson metrics on flat vector bundles over non-compact curves

Tristan C. Collins, Adam Jacob, Shing-Tung Yau

摘要:

设(E,D,P)是穿孔黎曼曲面(M,g)上具有抛物结构的平坦向量丛.我们考虑调和度量方程的变形,我们称之为泊松度量方程。该方程是K3曲面上全纯向量丛的Hermitian-Yang-Mills方程在大复结构极限下的降维。我们定义了斜坡稳定性的概念,并证明如果平坦联络D具有正则奇点,并且Riemannian度量g具有有限体积,则E允许具有由抛物结构确定的渐进性的Poisson度量当且仅当(E,D,P)是斜坡多稳定的。

英文摘要:

Let (E,D,P) be a flat vector bundle with a parabolic structure over a punctured Riemann surface, (M,g). We consider a deformation of the harmonic metric equation which we call the Poisson metric equation. This equation arises naturally as the dimension reduction of the Hermitian-Yang-Mills equation for holomorphic vector bundles on K3 surfaces in the large complex structure limit. We define a notion of slope stability, and show that if the flat connection D has regular singularities, and the Riemannian metric g has finite volume then E admits a Poisson metric with asymptotics determined by the parabolic structure if and only if (E,D,P) is slope polystable.

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