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arXiv 0704.1640math.CVmath.DG
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丰富线丛的Bergman核与平衡测度

Bergman kernels and equilibrium measures for ample line bundles

Robert Berman

摘要:

设L是紧致复Hermitian流形X上的一个充分全纯线丛. L上任何固定的光滑厄米特度量在L的k次张量幂幂的整体全纯截面空间上导出一个希尔伯特空间结构。本文对相应的Bergman核给出了各种收敛性结果。收敛性的研究在大k极限,并表示在平衡度量相关联的固定度量,以及在Monge-Ampere措施的固定度量本身在一定的支撑集。它还表明,平衡度量有Lipschitz连续的一阶导数。这些结果可以被看作是关于固定度量的曲率为正的情况的著名结果的推广(相应的平衡度量就是固定度量本身)。

英文摘要:

Let L be an ample holomorphic line bundle over a compact complex Hermitian manifold X. Any fixed smooth Hermitian metric on L induces a Hilbert space structure on the space of global holomorphic sections with values in the k:th tensor power of L. In this paper various convergence results are obtained for the corresponding Bergman kernels. The convergence is studied in the large k limit and is expressed in terms of the equilibrium metric associated to the fixed metric, as well as in terms of the Monge-Ampere measure of the fixed metric itself on a certain support set. It is also shown that the equilibrium metric has Lipschitz continuous first derivatives. These results can be seen as generalizations of well-known results concerning the case when the curvature of the fixed metric is positive (the corresponding equilibrium metric is then simply the fixed metric itself).

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