The essential spectrum of the Neumann--Poincare operator on a domain with corners
arXiv:1601.03183 · doi:10.1007/s00205-016-1051-6
Abstract
Exploiting the homogeneous structure of a wedge in the complex plane, we compute the spectrum of the anti-linear Ahlfors-Beurling transform acting on the associated Bergman space. Consequently, the similarity equivalence between the Ahlfors-Beurling transform and the Neumann-Poincare operator provides the spectrum of the latter integral operator on a wedge. A localization technique and conformal mapping lead to the first complete description of the essential spectrum of the Neumann-Poincare operator on a planar domain with corners, with respect to the energy norm of the associated harmonic field.
References in corpus (3)
Cited by in corpus (15)
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