Universität zu Köln

Nemkov, Nikita A., Basharin, Alexey A. and Fedotov, Vassili A. (2018). Electromagnetic sources beyond common multipoles. Phys. Rev. A, 98 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9934

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Abstract

The complete dynamic multipole expansion of electromagnetic sources contains more types of multipole terms than is conventionally perceived. The toroidal multipoles are one of the examples of such contributions that have been widely studied in recent years. Here we inspect more closely the other type of commonly overlooked terms known as the mean-square radii. In particular, we discuss both quantitative and qualitative aspects of the mean-square radii and provide a general geometrical framework for their visualization. We also consider the role of the mean-square radii in expanding the family of nontrivial nonradiating electromagnetic sources.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Nemkov, Nikita A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Basharin, Alexey A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fedotov, Vassili A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-175964
DOI:	10.1103/PhysRevA.98.023858
Journal or Publication Title:	Phys. Rev. A
Volume:	98
Number:	2
Date:	2018
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9934
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NANOPARTICLES; FIELDS Multiple languages Optics; Physics, Atomic, Molecular & Chemical Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17596