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16 papers · 1 filter
The present status of non-compact lattice QED
M. Goeckeler, R. Horsley, P. E. L. Rakow +2
We give a 1993 update of non-compact lattice QED, in particular the chiral condensate, finite size effects and meson mass ratios. We compare descriptions of the phase transition. O…
Three-point functions in noncompact lattice QED
M. Goeckeler, R. Horsley, P. E. L. Rakow +1
We calculate fermion-antifermion-"meson" three-point functions in noncompact lattice QED with dynamical staggered fermions and use them to extract effective Yukawa couplings. The r…
Quantum Group Invariant Integrable n-State Vertex Models with Periodic Boundary Conditions
M. Karowski, A. Zapletal
An invariant transfer matrix with periodic boundary conditions is analysed by means of the algebraic nested Bethe ansatz for the case of being a root of unity. The…
Inhomogeneous Systems with Unusual Critical Behaviour
F. Iglói, I. Peschel, L. Turban
The phase transitions and critical properties of two types of inhomogeneous systems are reviewed. In one case, the local critical behaviour results from the particular shape of the…
Theory of Superselection Sectors for Generalized Ising models
J. R. Reyes Martínez
We apply the theory of superselection sectors in the same way as done by G.Mack and V.Schomerus for the Ising model to generalizations of this model described by J.Fröhlich and T.K…
The crossover from first to second-order finite size scaling: A numerical study Christian Borgs
Stefan Kappler, Paul Rakow
We consider a particular case of the two dimensional Blume-Emery-Griffiths model to study the finite-size scaling for a field driven first-order phase transition with two coexistin…