The magnetic condensate, strong vector forces and monopoles

We study the interplay of the magnetic condensate , chiral symmetry breaking, strong vector forces and magnetic monopoles. Physical arguments are presented to motivative the appearance of a vacuum expectation value of the magnetic condensate in the chiral symmetry broken phase of strongly coupled quantum electrodynamics. Calculation of the magnetic condensate are presented for quenched non-compact lattice QED aand lineraized lattice QED. In both models a magnetic condensate is generated whose critical behavior is the same as . The anomalous dimension of anti ψσμνψFμν is extracted and the Pauli term is seen to become renormalizable together with four Fermi operators. The influence of magnetic monopole networks on fermion wave functions is studied in both non-compact and linearized lattice QED and significant differences are found between the two models. The role of the monopoles in driving a chiral phase transition in unquenched lattice QED is argued to be enhanced as Nf, the number of dynamical light fermions, is increased from zero. (orig.)