Phase structure and chiral limit of compact lattice QED with Wilson fermions

We study the phase structure and chiral limit of 4d compact lattice QED with Wilson fermions (both dynamical and quenched). We use the standard Wilson action (WA) and also the modified action (MA) with some lattice artifacts suppressed. We show that lattice artifacts influence the distributions of eigenvalues #lambda#_i of the fermionic matrix especially for small values of #lambda#_i. Our main conclusion is that the chiral limit of compact QED can be efficiently located using different techniques. (orig.)SIGLEAvailable from TIB Hannover: RA 2999(93-180) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDeutsche Forschungsgemeinschaft (DFG), Bonn (Germany)DEGerman

Compact lattice QED with Wilson fermions

We study the phase structure and the chiral limit of 4d compact lattice QED with Wilson fermions (both dynamical and quenched). We use the standard Wilson gauge action and also a modified one suppressing lattice artifacts. Different techniques and observables to locate the chiral limit are discussed. (orig.)SIGLEAvailable from TIB Hannover: RA 2999(94-151) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDeutsche Forschungsgemeinschaft (DFG), Bonn (Germany)DEGerman