A Conformally Invariant Derivation of Average Electromagnetic Helicity

The average helicity of a given electromagnetic field measures the difference between the number of left- and right-handed photons contained in the field. Here, the average helicity is derived using the conformally invariant inner product for Maxwell fields. Several equivalent integral expressions i...

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Bibliographic Details
Main Author: Ivan Fernandez-Corbaton
Format: Article
Language:English
Published: MDPI AG 2019-11-01
Series:Symmetry
Subjects:
Online Access:https://www.mdpi.com/2073-8994/11/11/1427