Fields of accelerated sources: Born in de Sitter

TL;DR

This paper thoroughly analyzes scalar and electromagnetic fields of uniformly accelerated charges in de Sitter spacetime, extending previous work and exploring various coordinate systems and limiting procedures to connect with classical solutions.

Contribution

It extends the classical Born solutions to de Sitter space, providing detailed constructions, coordinate analyses, and a limiting procedure to Minkowski space.

Findings

Generalized Born solutions in de Sitter space are constructed and analyzed.

A limiting procedure connects de Sitter solutions to classical Minkowski solutions.

Nine families of coordinate systems in de Sitter space are described and illustrated.

Abstract

This paper deals thoroughly with the scalar and electromagnetic fields of uniformly accelerated charges in de Sitter spacetime. It gives details and makes various extensions of our Physical Review Letter from 2002. The basic properties of the classical Born solutions representing two uniformly accelerated charges in flat spacetime are first summarized. The worldlines of uniformly accelerated particles in de Sitter universe are defined and described in a number of coordinate frames, some of them being of cosmological significance, the other are tied naturally to the particles. The scalar and electromagnetic fields due to the accelerated charges are constructed by using conformal relations between Minkowski and de Sitter space. The properties of the generalized `cosmological' Born solutions are analyzed and elucidated in various coordinate systems. In particular, a limiting procedure is demonstrated which brings the cosmological Born fields in de Sitter space back to the classical Born solutions in Minkowski space. In an extensive Appendix, which can be used independently of the main text, nine families of coordinate systems in de Sitter spacetime are described analytically and illustrated graphically in a number of conformal diagrams.