Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/3635
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Type: Journal article
Title: Magnetic monopoles, electric neutrality and the static Maxwell-Dirac equations
Author: Radford, Chris
Booth, Hilary
Citation: Journal of Physics A: Mathematical and General, 1999; 32(31):5807-5822
Issue Date: 1999
ISSN: 0305-4470
Statement of
Responsibility: 
Chris Radford and Hilary Booth
Abstract: We study the full Maxwell-Dirac equations: Dirac field with minimally coupled electromagnetic field and Maxwell field with Dirac current as source. Our particular interest is the static case in which the Dirac current is purely time-like - the `electron' is at rest in some Lorentz frame. In this case we prove two theorems under rather general assumptions. Firstly, that if the system is also stationary (time independent in some gauge) and isolated (in the sense that the fields belong to a suitable weighted Sobolev space), then the system as a whole must have vanishing total charge, i.e. it must be electrically neutral. In fact, the theorem only requires that the system be asymptotically stationary and static. Secondly, we show, in the axially symmetric case, that if there are external Coulomb fields then these must necessarily be magnetically charged - all Coulomb external sources are electrically charged magnetic monopoles.
Rights: © 1999 IOP Publishing Ltd
DOI: 10.1088/0305-4470/32/31/306
Appears in Collections:Pure Mathematics publications

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