On the Chiral Magnetic Effect in Soft-Wall AdS/QCD
A. Gorsky, P. N. Kopnin, A. V. Zayakin
TL;DR
This paper investigates the chiral magnetic effect within soft-wall AdS/QCD, demonstrating a non-zero current contrary to previous models, and discusses the neutralization mechanism via string production.
Contribution
It introduces a calculation of the chiral magnetic effect in soft-wall AdS/QCD with natural boundary conditions, showing a non-zero result unlike earlier models.
Findings
Non-zero chiral magnetic effect in soft-wall AdS/QCD
Mechanism of neutralization via string production
Comparison with Sakai--Sugimoto model results
Abstract
The essence of the chiral magnetic effect is generation of an electric current along an external magnetic field. Recently it has been studied by Rebhan et al. within the Sakai--Sugimoto model, where it was shown to be zero. As an alternative, we calculate the chiral magnetic effect in soft-wall AdS/QCD and find a non-zero result with the natural boundary conditions. The mechanism of the dynamical neutralization of the chiral chemical potential via the string production is discussed in the dual two-form representation.
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