Three-dimensional QED with dynamical fermions in an external magnetic field - art. no. 034502

In this paper, we present results of numerical lattice simulations of two-f lavor QED in three space-time dimensions. First, we provide evidence that c hiral symmetry is spontaneously broken in the chiral and continuum limit. N ext we discuss the role of an external magnetic field B on the dynamically generated fermion mass. We investigate the B dependence of the condensate t hrough calculations with dynamical fermions using the noncompact formulatio n of the gauge field, and compare the results with those of a comparable st udy using the quenched approximation.