期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 2, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP02(2011)110
关键词
Gauge-gravity correspondence; Chiral Lagrangians; QCD
资金
- Accion Integrada Hispanoaustriaca [HA2008-0003]
- Plan Nacional de Alta Energias [FPA-2006-05485]
- Comunidad de Madrid [HEP-HACOS S2009/ESP-1473]
- OAD [ES12/2009]
- Austrian Science Foundation FWF [P22114]
- Academy of Finland [136997]
- Academy of Finland (AKA) [136997, 136997] Funding Source: Academy of Finland (AKA)
- Austrian Science Fund (FWF) [P 22114] Funding Source: researchfish
- Austrian Science Fund (FWF) [P22114] Funding Source: Austrian Science Fund (FWF)
We calculate anomaly induced conductivities from a holographic gauge theory model using Kubo formulas, making a clear conceptual distinction between thermodynamic state variables such as chemical potentials and external background fields. This allows us to pinpoint ambiguities in previous holographic calculations of the chiral magnetic conductivity. We also calculate the corresponding anomalous current three-point functions in special kinematic regimes. We compare the holographic results to weak coupling calculations using both dimensional regularization and cutoff regularization. In order to reproduce the weak coupling results it is necessary to allow for singular holographic gauge field configurations when a chiral chemical potential is introduced for a chiral charge defined through a gauge invariant but non-conserved chiral density. We argue that this is appropriate for actually addressing charge separation due to the chiral magnetic effect.
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