Electromagnetic Chirality, Part 2: The Macroscopic Perspective [Electromagnetic Perspectives]
نویسندگان
چکیده
منابع مشابه
Objects of Maximum Electromagnetic Chirality
We introduce a definition of the electromagnetic chirality of an object and show that it has an upper bound. Reciprocal objects attain the upper bound if and only if they are transparent for all the fields of one polarization handedness (helicity). Additionally, electromagnetic duality symmetry, i.e., helicity preservation upon interaction, turns out to be a necessary condition for reciprocal o...
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synopsis The connection between the microscopic field equations of Lorentz, in which all electromagnetic phenomena are attributed to charged particles, and the macroscopic Maxwell equations in which electricity is treated as a continuous fluid and the properties of material media are described by multipole moment densities P, M, Q etc., has been discussed at intervals ever since Lorentz’s time....
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A condensed introduction to quantum gauge theories is given in the perturbative S-matrix framework; path integral methods are used nowhere. This approach emphasizes the fact that it is not necessary to start from classical gauge theories which are then subject to quantization, but it is also possible to recover the classical group structure and coupling properties from purely quantum mechanical...
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The toroidal dipole is a peculiar electromagnetic excitation that can not be presented in terms of standard electric and magnetic multipoles. A static toroidal dipole has been shown to lead to violation of parity in atomic spectra and many other unusual electromagnetic phenomena. The existence of electromagnetic resonances of toroidal nature was experimentally demonstrated only recently, first ...
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ژورنال
عنوان ژورنال: IEEE Antennas and Propagation Magazine
سال: 2020
ISSN: 1045-9243,1558-4143
DOI: 10.1109/map.2020.2969265