Brillouin-Wigner perturbation theory in open electromagnetic systems

被引：139

作者：

Muljarov, E. A. ^{[2
]}

Langbein, W. ^{[2
]}

Zimmermann, R. ^{[1
]}

机构：

[1] Univ Berlin, Inst Phys Humboldt, D-12489 Berlin, Germany

[2] Cardiff Univ Parade, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales

来源：

EPL | 2010年 / 92卷 / 05期

基金：

英国生物技术与生命科学研究理事会;

关键词：

TIME-INDEPENDENT PERTURBATION; RESONANCE WAVE-FUNCTIONS; QUANTUM-THEORY; STATES; COMPLETENESS; POTENTIALS; MODES;

D O I：

10.1209/0295-5075/92/50010

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 oneand three-dimensional examples being, respectively, a dielectric slab and a microsphere. Copyright (C) EPLA, 2010

引用

页数：6

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