Exchange of helicity in a knotted electromagnetic field

Details Exchange of helicity in a knotted electromagnetic field Exchange of helicity in a knotted electromagnetic field

2011-05-31

arxiv.org/abs/1105.6285v2

Ann. Phys. (Berlin) 524, No. 2, 71-75 (2012)

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 6 fig

Scientific paper

10.1002/andp.201100119

In this work we present for the first time an exact solution of Maxwell equations in vacuum, having non trivial topology, in which there is an exchange of helicity between the electric and magnetic part of such field. We calculate the temporal evolution of the magnetic and electric helicities, and explain the exchange of helicity making use of the Chern-Simon form. We also have found and explained that, as time goes to infinity, both helicities reach the same value and the exchange between the magnetic and electric part of the field stops.

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