On chiral magnetic effect and holography
Abstract
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 ${\bf j} = \frac{\mu_A}{2\pi^2}e^2 N_c {\bf B}$.
- Publication:
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arXiv e-prints
- Pub Date:
- May 2010
- DOI:
- 10.48550/arXiv.1005.1888
- arXiv:
- arXiv:1005.1888
- Bibcode:
- 2010arXiv1005.1888R
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 7 pages