%0 Journal Article
%T Long-range magnetic fields in the ground state of the Standard Model plasma
%A Alexey Boyarsky
%A Oleg Ruchayskiy
%A Mikhail Shaposhnikov
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevLett.109.111602
%X 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.
%U http://arxiv.org/abs/1204.3604v1