Electromagnetic Fields in the QCD Vacuum

Johann Rafelski (Department of Physics , University of Arizona , Tucson , AZ) , H.-Thomas Elze (Instituto de Fisica , UFRJ , Rio de Janeiro , Brazil)

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classification ✦ hep-ph

keywords vacuumelectromagneticfieldsinteractionsstrongstructureactiveapplied

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Quarks play an active role in shaping the QCD vacuum structure. Being dual carriers of both `color' and `electric' charges they also respond to externally applied electromagnetic fields. Thus, in principle, the vacuum of strong interactions influences higher order QED processes such as photon-photon scattering. We survey here the current status of the understanding of the vacuum structure of strong interactions, and take a fresh look at its electromagnetic properties.

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Electromagnetic Fields in the QCD Vacuum

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