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A chiral magnetic spiral in the holographic Sakai-Sugimoto model

Ballon Bayona, Alfonso; Peeters, Kasper; Zamaklar, Marija

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Alfonso Ballon Bayona


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.


Ballon Bayona, A., Peeters, K., & Zamaklar, M. (2012). A chiral magnetic spiral in the holographic Sakai-Sugimoto model. Journal of High Energy Physics, 2012(11), Article 164.

Journal Article Type Article
Publication Date Nov 29, 2012
Deposit Date Nov 5, 2012
Publicly Available Date May 7, 2014
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2012
Issue 11
Article Number 164
Keywords Gauge-gravity correspondence, AdS-CFT Correspondence.


Accepted Journal Article (1.4 Mb)

Copyright 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

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