9 citations · 9 across the 2 of their papers we have counts for
3 papers
math-ph2020
Spectra of Gurtin-Pipkin type of integro-differential equations and applications to waves in graded viscoelastic structures
Christian Engström
In this paper, we study spectral properties and spectral enclosures for the Gurtin-Pipkin type of integro-differential equations in several dimensions. The analysis is based on an…
math.NA2019★ 9 cited
Computation of scattering resonances in absorptive and dispersive media with applications to metal-dielectric nano-structures
Juan C. Araujo-Cabarcas, Carmen Campos, Christian Engström +1
In this paper we consider scattering resonance computations in optics when the resonators consist of frequency dependent and lossy materials, such as metals at optical frequencies.…
math-ph2008
On the Spectrum of an Operator Pencil with Applications to Wave Propagation in Periodic and Frequency Dependent Materials
Christian Engstrom, Markus Richter
We study wave propagation in periodic and frequency dependent materials. The approach in this paper leads to spectral analysis of a quadratic operator pencil where the spectral par…