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More on the covariant retarded Green's function for the electromagnetic field in de Sitter spacetime

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arxiv 0907.4002 v2 pith:YYWNOV43 submitted 2009-07-23 gr-qc

Atsushi Higuchi , Yen Cheong Lee , Jack R. Nicholas This is my paper · ORCID
classification gr-qc
keywords fieldcovariantelectromagneticgreenretardedsitterspacetimefunction
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In a recent paper (Phys. Rev. D78, 084031 (2008), arXiv:0808.0642, Ref. [1]) it was shown in examples that the covariant retarded Green's functions in particular gauges for electromagnetism and linearized gravity can be used to reproduce field configurations correctly in spite of the spacelike nature of past infinity in de Sitter spacetime. In this paper we extend the work of Ref. [1] concerning the electromagnetic field and show that the covariant retarded Green's function with an arbitrary value of the gauge parameter reproduces the electromagnetic field from two opposite charges at antipodal points of de Sitter spacetime.

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