The aim of this workshop is to bring together experimentalists and theorists to discuss the various effects through which strong magnetic fields can influence the dynamics of QCD. The workshop is organized at the ECT* in Trento, Italy from Monday 12th to Friday 16th November 2012.

In high energy heavy ion collisions the strongest magnetic fields in existence in our universe since the times of the Big Bang are produced. With eB ~ (100 MeV)² being of a hadronic scale and due to the very strong time dependence of these fields one has to expect that they substantially influence QCD dynamics in the early phase of such collisions. Even more interestingly QCD dynamics can generate topological charge changes which in turn should lead to a coupling of magnetic to electric fields. The latter would modify the distribution of charged particles and thus should be experimentally accessible. Charged particle correlations of the expected type might have been observed by STAR, though the experimental situation is rather unsettled at present. These types of effects are usually discussed under the headlines 'Chiral Magnetic Effect' (CME) and 'Local Parity Violation' where the second is more generic and, therefore, more adequate. Motivated primarily by the early STAR data lattice QCD groups got interested to study the QCD phase diagram for arbitrary constant magnetic background fields. Such fields change the localization properties and induce a spin polarization of the thermal medium which can generate a wide spectrum of novel phenomena, including e.g. such exotic effects like superconductivity caused by rho condensation.


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