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.
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.
|Keywords:||Gauge-gravity correspondence, AdS-CFT Correspondence.|
|Full text:||(AM) Accepted Manuscript|
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|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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