Sharp Weyl Law for Signed Counting Function of Positive Interior Transmission Eigenvalues
Mathematical Physics
2016-05-25 v7 Analysis of PDEs
Functional Analysis
math.MP
Spectral Theory
Abstract
We consider the interior transmission eigenvalue (ITE) problem, which arises when scattering by inhomogeneous media is studied. The ITE problem is not self-adjoint. We show that positive ITEs are observable together with plus or minus signs that are defined by the direction of motion of the corresponding eigenvalues of the scattering matrix (when the latter approach {\bf)}. We obtain a Weyl type formula for the counting function of positive ITEs, which are taken together with ascribed signs.
Cite
@article{arxiv.1401.6213,
title = {Sharp Weyl Law for Signed Counting Function of Positive Interior Transmission Eigenvalues},
author = {Evgeny Lakshtanov and Boris Vainberg},
journal= {arXiv preprint arXiv:1401.6213},
year = {2016}
}
Comments
Some corrections in the proofs are made. In particular, Lemma 2.4 is extended. The authors are grateful to Lucas Chesnel for critical remarks