We present a detailed analysis, in the framework of the MFA approach, of the critical behaviour of the lattice Schwinger model with Wilson fermions on lattices up to 24^2, through the study of the Lee-Yang zeros and the specific heat. We find compelling evidence for a critical line ending at $\kappa =0.25$ at large $\beta$. Finite size scaling analysis on lattices 8^2, 12^2, 16^2, 20^2 and 24^2 indicates a continuos transition. The hyperscaling relation is verified in the explored $\beta$ region.
The Schwinger model with Wilson fermions in the MFA approach.
GALANTE, ANGELO;
1996-01-01
Abstract
We present a detailed analysis, in the framework of the MFA approach, of the critical behaviour of the lattice Schwinger model with Wilson fermions on lattices up to 24^2, through the study of the Lee-Yang zeros and the specific heat. We find compelling evidence for a critical line ending at $\kappa =0.25$ at large $\beta$. Finite size scaling analysis on lattices 8^2, 12^2, 16^2, 20^2 and 24^2 indicates a continuos transition. The hyperscaling relation is verified in the explored $\beta$ region.File in questo prodotto:
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