Read, James and Linnemann, Niels (2021) Comment on `Do electromagnetic waves always propagate along null geodesics?'. [Preprint]

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Abstract

We study the propagation of Maxwellian electromagnetic waves in curved spacetimes in terms of the appropriate geometrical optics limit, notions of signal speed, and minimal coupling prescription from Maxwellian theory in flat spacetime. In the course of this, we counter a recent major claim by Asenjo and Hojman (2017) to the effect that the geometrical optics limit is partly ill-defined in Gödel spacetime; we thereby dissolve the present tension concerning established results on wave propagation and the optical limit.

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Item Type:	Preprint
Creators:	Creators Email ORCID Read, James james.read@philosophy.ox.ac.uk Linnemann, Niels nielslinnemann@aol.com 0000-0002-3695-8611
Additional Information:	Forthcoming in Classical and Quantum Gravity. Title different from previous version but otherwise unchanged.
Keywords:	General relativity; waves; geometrical optics; superluminal propagation; signal velocity
Subjects:	Specific Sciences > Physics > Relativity Theory
Depositing User:	Dr. James Read
Date Deposited:	12 Dec 2021 01:19
Last Modified:	12 Dec 2021 01:19
Item ID:	20016
Subjects:	Specific Sciences > Physics > Relativity Theory
Date:	1 October 2021
URI:	https://philsci-archive.pitt.edu/id/eprint/20016

Available Versions of this Item

• Curvature coupling, electromagnetic wave propagation, and the consistency of the geometrical optics limit. (deposited 03 Oct 2021 03:33)
  • Comment on `Do electromagnetic waves always propagate along null geodesics?'. (deposited 12 Dec 2021 01:19) [Currently Displayed]

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