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AGA

Seminar

Pollution-free methods for finding eigenvalues in the gaps of the continuous spectrum

Levitin, M (Heriot-Watt)
Wednesday 23 May 2007, 11:00-12:00

Seminar Room 1, Newton Institute

Abstract

We describe a universal non-variational approach allowing to find numerically the eigenvalues of a self-adjoint operator in the gaps of essential spectrum. The method does not produce spurious eigenvalues and gives two-sided a posteriori error estimates. As an illustration, we discuss a periodic Schroedinger operator perturbed by a compact potential.

Presentation

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Audio

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