arXiv:hep-ph/9806389·v2·High Energy Physics — Phenomenology
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)
Abstract
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.
Comments: 16 pages, Invited lecture at: Workshop on Quantum Chromodynamics, Paris, France 1--6 June 1998, to appear in proceedings, World Scientific, H. Fried and B. Muller, edts