Is there a maximum magnetic field in QED?
High Energy Physics - Theory
2009-12-04 v2 High Energy Astrophysical Phenomena
High Energy Physics - Phenomenology
Abstract
It was recently conjectured by Shabad and Usov that there exists in QED a maximum magnetic field of 10^{42} G, above which the magnetized vacuum becomes unstable. Using a nonperturbative analysis that consistently incorporates the effective electron mass and the screening effect in a strong magnetic field, we show that the conjectured phenomenon of positronium collapse never takes place. Thus, there does not exist a maximum magnetic field in QED and the magnetized vacuum is stable for all values of the magnetic field.
Cite
@article{arxiv.0901.3413,
title = {Is there a maximum magnetic field in QED?},
author = {Chung Ngoc Leung and Shang-Yung Wang},
journal= {arXiv preprint arXiv:0901.3413},
year = {2009}
}
Comments
5 pages, 2 figures, to appear in Phys. Lett. B