Axial anomaly, Dirac sea, and the chiral magnetic effect
arXiv:1010.0943 · doi:10.1142/9789814350198_0028
Abstract
Gribov viewed the axial anomaly as a manifestation of the collective motion of charged fermions with arbitrarily high momenta in the vacuum. In the presence of an external magnetic field and a chirality imbalance, this collective motion becomes directly observable in the form of the electric current - this is the chiral magnetic effect (CME). I give an elementary introduction into the physics of CME, and discuss some recent developments.
12 pages, to appear in the Proceedings of Gribov-80 Memorial conference, ICTP, Trieste, Italy, May 26-28, 2010