Espalhamento fóton-fóton em colisões de íons pesados e a quebra da simetria de Lorentz.

Abstract

Recent studies have found experimental evidence for the scattering of light by light itself. Performed at the LHC, the experiment was carried out by ultra-peripheral collisions of heavy lead ions (Pb) - collisions in which the interaction takes place via photon-ion and photon-photon. For the analysis of these processes will be guided by the basic processes of QED such as Bhabha, Compton, Möller and Coulomb scattering. Here we describe these and especially the photon-photon scattering process in heavy ion collisions, from QED extended by symmetry breaking of Lorentz-CPT. We consider the system in which the contributions of Lorentz violation parameter enter linearly in the propagators.