The null and force-free electromagnetic field. (24th December 2020)

• Record Type: Journal Article
• Authors: Menon, Govind
• Is Part Of: Classical and quantum gravity. Volume 38:Number 4(2021)
• Publication Date: 2020-12-24
• Subjects: force-free electrodynamics -- foliations of spacetime -- general relativity; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/1361-6382/abcf87
• Languages: English
• ISSNs: 0264-9381

Abstract

Abstract: This paper describes the electrodynamics of a null and force-free field in completely geometric terms. As was previously established in Menon (2020 Class. Quantum Grav. 37 245006), solutions to force-free electrodynamics are governed by the existence of certain special types of foliations of spacetime. Here the nature of the foliations in a coordinate-free formalism in the null case is prescribed. All of the general results are illustrated by constructing a new null, force-free electrodynamic field in a Friedmann–Lemaitre–Robertson–Walker spacetime.