On a formal equivalence between electro-magnetic waves in cold plasma and shallow water inertio-gravity waves
Plasma Physics
2022-08-17 v1 Fluid Dynamics
Abstract
The fundamental dispersion relation of transverse electro-magnetic waves in a cold collisionless plasma is formally equivalent to the two dimensional dispersion relation of inertio-gravity waves in a rotating shallow water system, where the Coriolis frequency can be identified with the plasma frequency, and the shallow water gravity wave phase speed plays the role of the speed of light. Here we examine this formal equivalence in the governing linearised equations, and compare between the propagation wave mechanisms in these seemingly unrelated physical systems.
Keywords
Cite
@article{arxiv.2108.06213,
title = {On a formal equivalence between electro-magnetic waves in cold plasma and shallow water inertio-gravity waves},
author = {Eyal Heifetz and Leo R. M. Maas and Julian Mak and Ishay Pomerantz},
journal= {arXiv preprint arXiv:2108.06213},
year = {2022}
}
Comments
13 pages, 5 figures; submitted to Journal of Plasma Physics