Ergodic Jacobi matrices and conformal maps

Abstract

We study structural properties of the Lyapunov exponent $\gamma$ and the density of states $k$ for ergodic (or just invariant) Jacobi matrices in a general framework. In this analysis, a central role is played by the function $w=-\gamma +i\pi k$ as a conformal map between certain domains. This idea goes back to Marchenko and Ostrovskii, who used this device in their analysis of the periodic problem.

References in corpus (1)

• Continuity of the Lyapunov exponent for quasiperiodic operators with analytic potential

Cited by in corpus (1)

• Orthogonal polynomials on Cantor sets of zero Lebesgue measure