Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Electromagnetic Waves in Cosmological Spacetime

Version 1 : Received: 8 May 2023 / Approved: 9 May 2023 / Online: 9 May 2023 (04:49:51 CEST)

A peer-reviewed article of this Preprint also exists.

Staicova, D.; Stoilov, M. Electromagnetic Waves in Cosmological Spacetime. Universe 2023, 9, 292. Staicova, D.; Stoilov, M. Electromagnetic Waves in Cosmological Spacetime. Universe 2023, 9, 292.

Abstract

We consider the propagation of electromagnetic waves in the Friedman – Lemaître – Robertson – Walker metric. The exact solutions for plane and spherical wave are written down. The corresponding redshift, amplitude change, and dispersion are discussed. We also speculate about the connection of the electromagnetic wave equation to the Klein–Gordon equation.

Keywords

Friedman metric; electromagnetic waves; redshift; amplitude change; dispersion; Klein–Gordon equation; tachyon inflation

Subject

Physical Sciences, Astronomy and Astrophysics

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