Dynamical Wilson fermions and the problem of the chiral limit in compact lattice QED - art. no. 114505

We study the approach to the chiral transition line kappa(c)(beta) in quenc hed and full compact lattice QED with Wilson fermions within the confinemen t phase especially in the pseudoscalar sector of the theory. We show that i n the strong coupling limit (beta=0) both the quenched and the full theory behave partial-conservation-of-axial-vector-current- like. However, at larg er beta in contrast with the quenched theory the full one exhibits a chiral transition most likely of first order, such that the pseudo-scalar mass ha s no zero-mass limit. [S0556-2821(98)06721-6].