Convergence of Bergman measures for high powers of a line bundle

Berman, Robert; Nystrom, David Witt

Convergence of Bergman measures for high powers of a line bundle

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Description

Let $L$ be a holomorphic line bundle on a compact complex manifold $X$ of dimension $n,$ and let $e^{-ϕ}$ be a continuous metric on $L.$ Fixing a measure $dμ$ on $X$ gives a sequence of Hilbert spaces consisting of holomorphic sections of tensor powers of $L.$ We prove that the corresponding sequence of scaled Bergman measures converges, in the high tensor power limit, to the equilibrium measure of the pair $(K,ϕ),$ where $K$ is the support of $dμ,$ as long as $dμ$ is stably Bernstein-Markov with respect to $(K,ϕ).$ Here the Bergman measure denotes $dμ$ times the restriction to the diagonal of the pointwise norm of the corresponding orthogonal projection operator. In particular, an extension to higher dimensions is obtained of results concerning random matrices and classical orthogonal polynomials.
8 pages