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arXiv · 1210.3084

On Optimal Separation of Eigenvalues for a Quasiperiodic Jacobi Matrix

Ilia Binder·Mircea Voda
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Abstract

We consider quasiperiodic Jacobi matrices of size N with analytic coefficients. We show that, in the positive Lyapunov exponent regime, after removing some small sets of energies and frequencies, any eigenvalue is separated from the rest of the spectrum by $N^{-1}(\log N)^{-p}$, with p>15.

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Ilia Binder, Mircea Voda. 2012-10-30. On Optimal Separation of Eigenvalues for a Quasiperiodic Jacobi Matrix. https://doi.org/10.1007/s00220-013-1836-5

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