Muljarov, Egor A. ![]() ![]() |
Official URL: http://dx.doi.org/10.1209/0295-5075/92/50010
Abstract
A Brillouin-Wigner perturbation theory is developed for open electromagnetic systems which are characterised by discrete resonant states with complex eigenenergies. Since these states are exponentially growing at large distances, a modified normalisation is introduced that allows a simple spectral representation of the Green's function. The perturbed modes are found by solving a linear eigenvalue problem in matrix form. The method is illustrated on exactly solvable one- and three-dimensional examples being, respectively, a dielectric slab and a microsphere.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Publisher: | EDP Sciences |
ISSN: | 0295-5075 |
Last Modified: | 17 Oct 2022 10:12 |
URI: | https://orca.cardiff.ac.uk/id/eprint/7331 |
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