Electromagnetic fields in curved spacetimes
广义相对论与量子宇宙学
2009-11-10 v3 天体物理学
摘要
We consider the evolution of electromagnetic fields in curved spacetimes and calculate the exact wave equations of 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 parts of the gravitational field act as driving sources of electromagnetic disturbances. When applied to perturbed FRW cosmologies, our results argue for a superadiabatic-type amplification of large-scale cosmological magnetic fields in Friedmann models with open spatial curvature.
引用
@article{arxiv.gr-qc/0407080,
title = {Electromagnetic fields in curved spacetimes},
author = {Christos G. Tsagas},
journal= {arXiv preprint arXiv:gr-qc/0407080},
year = {2009}
}
备注
Minor changes, typos corrected. Published version