Long-range magnetic fields in the ground state of the Standard Model plasma
High Energy Physics - Phenomenology
2012-10-09 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
In thermal equilibrium the ground state of the plasma of Standard Model particles is determined by temperature and exactly conserved combinations of baryon and lepton numbers. We show that at non-zero values of the global charges a translation invariant and homogeneous state of the plasma becomes unstable and the system transits into a new state, containing a large-scale magnetic field. The origin of this effect is the parity-breaking character of weak interactions and chiral anomaly. This situation can occur in the early Universe and may play an important role in its subsequent evolution.
Keywords
Cite
@article{arxiv.1204.3604,
title = {Long-range magnetic fields in the ground state of the Standard Model plasma},
author = {Alexey Boyarsky and Oleg Ruchayskiy and Mikhail Shaposhnikov},
journal= {arXiv preprint arXiv:1204.3604},
year = {2012}
}
Comments
6 pages. Comments are welcome