Electromagnetic fields in curved spacetimes
Open accessAbstract
We consider the evolution of electromagnetic fields in curved spacetimes and calculate the exact wave equations for the associated electric and magnetic components. Our analysis is fully covariant, applies to a general spacetime and isolates all the sources that affect the propagation of these waves. Among others, we explicitly show how the different components of the gravitational field act as driving sources of electromagnetic disturbances. When applied to perturbed Friedmann–Robertson–Walker cosmologies, our results argue for a superadiabatic-type amplification of large-scale cosmological magnetic fields in Friedmann models with open spatial curvature.
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When the standard Maxwell equation in a curved spacetime is expressed as a second-order differential equation of the potential vector, a curvature-coupled term also appears.
“In fact, when the standard Maxwell equation in a curved spacetime is expressed as a second-order differential equation of the potential vector (i.e., as a wave equation) a curvature-coupled term also appears [27], whose effects have been studied in [45, 46].”
From Electrodynamics on cosmological scales (2016) · cites this paper as [46]
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Electrodynamics on cosmological scales
Li, L.-X. (2016) · General Relativity and Gravitation · doi:10.1007/s10714-016-2028-3 · Cited by 5 · see citing works
- Authors
- Tsagas, C. G.
- Affiliations
- University of Cambridge (GB)
- Corresponding author
- Tsagas, Christos G
- Venue
- Classical and Quantum Gravity
- Publisher
- IOP Publishing
- Published
- 2004-12-30
- Volume
- 22
- Issue
- 2
- Pages
- 393-407
- ISSN
- 0264-9381 (ISSN-L)
- 1361-6382
- OpenAlex
- W2111584213
- Cited by
- 130
- References
- 0
- Citations by year
- 2026: 5 · 2025: 10 · 2024: 12 · 2023: 5 · 2022: 5 · 2021: 8 · 2020: 2 · 2019: 7 · 2018: 4 · 2017: 6 · 2016: 9 · 2015: 6 · 2014: 9 · 2013: 3 · 2012: 6
- FWCI
- 1.97
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Classical and Quantum Gravity (publishedVersion)
- arXiv (Cornell University) (publishedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum and Classical Electrodynamics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
- Keywords
- electromagnetic fields, curved spacetime, covariant formulation, electromagnetic wave propagation, cosmological magnetic fields, large-scale structure
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