Egocentric physics: Just about Mie. (3rd November 2017)

• Record Type: Journal Article
• Authors: Stout, Brian; McPhedran, Ross
• Is Part Of: Europhysics letters. Volume 119:Number 4(2017:Aug.)
• Publication Date: 2017-11-03
• Subjects: 42.25.Fx -- 42.50.Md -- 41.20.Jb; Physics -- Periodicals; Electronic journals; 530.05
• DOI: 10.1209/0295-5075/119/44002
• Languages: English
• ISSNs: 0295-5075

Abstract

Abstract: We show that the physics of anapole excitations can accurately be described in terms of a truncated resonant state expansion formulation of standard Mie theory as an alternative to the recently advocated "toroidal" current description. In the purely Mie framework, the anapole behavior arises as a result of a Fano-type interference effect between different resonant states with complex wave numbers, provided that non-singular phase factors associated with causality are properly taken into account.