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A chiral magnetic spiral in the holographic Sakai-Sugimoto model.

Ballon Bayona, Alfonso and Peeters, Kasper and Zamaklar, Marija (2012) 'A chiral magnetic spiral in the holographic Sakai-Sugimoto model.', Journal of high energy physics., 2012 (11). p. 164.

Abstract

We investigate the effect of a magnetic field on the vacuum of low-temperature QCD at large-N c in the presence of a chiral chemical potential, using the holographic SakaiSugimoto model. Above some critical chemical potential we find an instability, which triggers a decay of the homogeneous vacuum to a non-homogeneous configuration with a spiral form, which we construct explicitly. We find that this decay is suppressed for sufficiently large magnetic field, and determine the critical strength. We find that the new vacuum does not exhibit the chiral magnetic effect. This is related to the way the chiral chemical potential is introduced. We discuss an alternative way of introducing the chiral chemical potential that leads to a nonzero chiral magnetic effect.

Item Type:Article
Additional Information:http://arxiv.org/abs/arXiv:1209.1953
Keywords:Gauge-gravity correspondence, AdS-CFT Correspondence.
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1007/JHEP11(2012)164
Publisher statement:© SISSA 2012. Published by Springer on behalf of International School for Advanced Studies (SISSA - Trieste, Italy). The final publication is available at Springer via http://dx.doi.org/10.1007/JHEP11(2012)164.
Date accepted:No date available
Date deposited:07 May 2014
Date of first online publication:November 2012
Date first made open access:No date available

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