Equilibrium Measures and Capacities in Spectral Theory

  title={Equilibrium Measures and Capacities in Spectral Theory},
  author={Barry Simon},
This is a comprehensive review of the uses of potential theory in studying the spectral theory of orthogonal polynomials. Much of the article focuses on the Stahl–Totik theory of regular measures, especially the case of OPRL and OPUC. Links are made to the study of ergodic Schrödinger operators where one of our new results implies that, in complete generality, the spectral measure is supported on a set of zero Hausdorff dimension (indeed, of capacity zero) in the region of strictly positive… CONTINUE READING
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