CONTINUOUS CHIRAL TRANSITION IN STRONGLY COUPLED COMPACT QED WITH THESTANDARD TORUS TOPOLOGY

We analyze the phase diagram of compact QED on the torus with a chiral ly symmetric four fermion interaction. Inside a mean field approximati on for the four fermion term, a line of first order phase transitions and another one of second order are found in the(beta,G)plane. Approac hing the second order line a continuum limit can be defined. Critical exponents vary along this line in a similar way as in the non-compact model, suggesting that a non-trivial interacting continuum theory can be constructed. (C) 1998 Elsevier Science B.V.