String picture of 1+1 dimensional QED in light-front formulation

We study quantum electrodynamics in 1+1 dimensions in the light-front frame using numerical methods. We analyze confinement and charge screening which are key features of this system. By direct analysis of wavefunctions of bound states in two-parton sector we determine the string tension. In four-parton sector we introduce inclusive distributions and inspect structure of energy eigenstates. We conclude that they are composed of two weakly interacting ff pairs. These four-particle states are responsible for the screening. Finally, we study time evolution of a fermion–antifermion state separated by a specific distance. We demonstrate that for sufficient separation it decays into a multiparton state and the number of particles in the product depends on separation of particles.