On Lattice QCD with Many Flavors

Details On Lattice QCD with Many Flavors On Lattice QCD with Many Flavors

1997-01-19

arxiv.org/abs/hep-lat/9701008v1

Phys.Lett. B400 (1997) 169-175

Physics

High Energy Physics

High Energy Physics - Lattice

10 pages, LaTeX, figures part of the LaTeX file

Scientific paper

10.1016/S0370-2693(97)00355-9

We discuss the confining and chiral-symmetry breaking properties of QCD with a large number of flavors $N_f$. In a Monte Carlo simulation of QCD with $N_f =16$ staggered fermions, we find clear evidence of a first order bulk phase transition which separates phases with broken and unbroken chiral symmetry. This is consistent with extrapolations of earlier studies with smaller $N_f$, and is also as expected from general arguments. Thus, even when the perturbative renormalization group flow has a new infrared stable fixed point near the origin, lattice artifacts induce chiral symmetry breaking, and presumably confinement, at sufficiently strong coupling.

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