Four-point correlator of vector currents and electric current susceptibility in holographic QCD

Details Four-point correlator of vector currents and electric current susceptibility in holographic QCD Four-point correlator of vector currents and electric current susceptibility in holographic QCD

2010-03-04

arxiv.org/abs/1003.1041v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 1 figure (v2: references added, typos corrected)

Scientific paper

In this work we calculate the four-point correlation function of vector quark currents of QCD via holographic QCD model. Computing the correlator we take into account the exchange of vector and axial vector bosons and dilaton in the bulk. The result is used for calculation of the two-point correlator of electromagnetic currents in external magnetic field at zero momentum, related to RHIC experiments, chiral magnetic effect and lattice study. At zero temperature we find this quantity to be loosely connected with chiral symmetry breaking and strongly dependent on the confinement properties. Some features of the AdS/QCD models are also discussed.

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