On chiral magnetic effect and holography

Details On chiral magnetic effect and holography On chiral magnetic effect and holography

2010-05-11

arxiv.org/abs/1005.1888v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages

Scientific paper

We point out that there is a difference between the behavior of fermionic systems (and their holographic analogs) in a background axial vector field, on the one hand, and at finite chiral chemical potential, on the other. In the former case, the electric current induced by constant background axial field $A_0$ and magnetic field ${\bf B}$ vanishes, while in the latter it is given by the anomaly-prescribed formula ${\bf j} = \frac{\mu_A}{2\pi^2}e^2 N_c {\bf B}$.

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