New knotted solutions of Maxwell's equations

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• Cobi Sonnenschein
• Thursday 29 September 2016, 13:00-14:00
• Potter Room (first floor, Pav. B).

If you have a question about this talk, please contact Dr. Piotr Tourkine.

In this talk I will describe topologically non-trivial solutions of vacuum electrodynamics. A prototype solution of this class is the Hopfion. I will present a novel method of generating such null solutions by applying conformal transformations with complex parameters on known solutions expressed in terms of Bateman’s variables. This has enabled us to get a wide class of solutions from the basic configuration like constant electromagnetic fields and plane-waves. I will introduce a covariant formulation of the Bateman’s construction and discuss the conserved charges associated with the conformal group as well as a set of four types of conserved helicities. I will further present a formulation in terms of quaternions. This led to a simple map between the electromagnetic knotted and linked solutions into flat connections of SU(2) gauge theory. We have computed the corresponding Chern-Simons charge of a class of such connection.

This talk is part of the Quantum Fields and Strings Seminars series.

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