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International Congress of Mathematicians

International Congress of Mathematicians

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ICAl 2002 • Vol. II • 733^742Asymptoties <strong>of</strong> Polynomials andEigenfunctionsS. Zelditch*AbstractWe review some recent results on asymptotic properties <strong>of</strong> polynomials <strong>of</strong>large degree, <strong>of</strong> general holomorphic sections <strong>of</strong> high powers <strong>of</strong> positive linebundles over Kahler manifolds, and <strong>of</strong> Laplace eigenfunctions <strong>of</strong> large eigenvalueon compact Riemannian manifolds. We describe statistical patterns inthe zeros, critical points and L p norms <strong>of</strong> random polynomials and holomorphicsections, and the influence <strong>of</strong> the Newton polytope on these patterns.For eigenfunctions, we discuss L p norms and mass concentration <strong>of</strong> individualeigenfunctions and their relation to dynamics <strong>of</strong> the geodesic flow.2000 Mathematics Subject Classification: 35P20, 30C15, 32A25, 58J40,60D05, 81S10, 14M25.Keywords and Phrases: Random polynomial, Holomorphic section <strong>of</strong> positiveline bundle, Distribution <strong>of</strong> zeros, Correlation between zeros, Bergman-Szego kernels, Newton polytope, Laplace eigenfunction, Spectral projections,I/ p -norms, Quantum ergodicity.1. IntroductionIn many measures <strong>of</strong> 'complexity', eigenfunctions ^/Ä(p\ = \(p\ <strong>of</strong> first orderelliptic operators behave like polynomials p(x) = X^| Q |

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