Dynamical Wilson fermions and the problem of the chiral limit in compact lattice QED

Details Dynamical Wilson fermions and the problem of the chiral limit in compact lattice QED Dynamical Wilson fermions and the problem of the chiral limit in compact lattice QED

1996-08-11

arxiv.org/abs/hep-lat/9608053v1

Phys.Rev. D58 (1998) 114505

Physics

High Energy Physics

High Energy Physics - Lattice

13 pages LaTeX (epsf), all figures included

Scientific paper

10.1103/PhysRevD.58.114505

We compare the approach to the chiral transition line $~\kappa_c(\bt)~$ in quenched and full compact lattice QED with Wilson fermions within the confinement phase, especially in the pseudoscalar sector of the theory. We show that in the strong coupling limit ($\beta =0$) the quenched theory is a good approximation to the full one, in contrast to the case of $\beta =0.8$. At the larger $\beta$-value the transition in the full theory is inconsistent with the zero--mass limit of the pseudoscalar particle, thus prohibiting the definition of a chiral limit.

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