Electromagnetic back-reaction from currents on a straight string
Cosmology and Nongalactic Astrophysics
2014-07-16 v2
Abstract
Charge carriers moving at the speed of light along a straight, superconducting cosmic string carry with them a logarithmically divergent slab of electromagnetic field energy. Thus no finite local input can induce a current that travels unimpeded to infinity. Rather, electromagnetic back-reaction must damp this current asymptotically to nothing. We compute this back-reaction and find that the electromagnetic fields and currents decline exactly as rapidly as necessary to prevent a divergence. We briefly discuss the corresponding gravitational situation.
Cite
@article{arxiv.1405.2097,
title = {Electromagnetic back-reaction from currents on a straight string},
author = {Jeremy M. Wachter and Ken D. Olum},
journal= {arXiv preprint arXiv:1405.2097},
year = {2014}
}
Comments
14 pages, 4 figures; corrected Eq. (41), clarified language after referee feedback