对K\ ahler-Einstein度量和随机点过程的邀请

R. Berman
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引用次数: 8

摘要

这是对在复杂射影代数流形X上构造Kahler-Einstein度量的概率方法的邀请。所讨论的度量出现在大N极限中,来自对X上N个点采样的规范方法,即来自X上的随机点过程,用代数几何数据定义。解释了负里奇曲率的卡勒-爱因斯坦度量收敛性的证明。在正Ricci曲率的情况下,引入了一种变分方法来证明猜想的收敛性,这可以看作是you - tian - donaldson猜想的概率构造类比。变分方法特别表明,在没有相变的假设下,收敛性是成立的,从代数几何的角度来看,这相当于某个阿基米德ζ函数的解析性质。
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An invitation to K\"ahler-Einstein metrics and random point processes
This is an invitation to the probabilistic approach for constructing Kahler-Einstein metrics on complex projective algebraic manifolds X. The metrics in question emerge in the large N-limit from a canonical way of sampling N points on X, i.e. from random point processes on X, defined in terms of algebro-geometric data. The proof of the convergence towards Kahler-Einstein metrics with negative Ricci curvature is explained. In the case of positive Ricci curvature a variational approach is introduced to prove the conjectural convergence, which can be viewed as a probabilistic constructive analog of the Yau-Tian-Donaldson conjecture. The variational approach reveals, in particular, that the convergence holds under the hypothesis that there is no phase transition, which - from the algebro-geometric point of view - amounts to an analytic property of a certain Archimedean zeta function.
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