Does the crossover from perturbative to nonperturbative physics in QCD become a phase transition at infinite N ?

Details Does the crossover from perturbative to nonperturbative physics in QCD become a phase transition at infinite N ? Does the crossover from perturbative to nonperturbative physics in QCD become a phase transition at infinite N ?

2003-08-27

arxiv.org/abs/hep-lat/0308033v1

Phys.Lett.B574:65-74,2003

Physics

High Energy Physics

High Energy Physics - Lattice

8p, 5 figures, revtex4

Scientific paper

10.1016/j.physletb.2003.08.070

We present numerical evidence that, in the planar limit, four dimensional Euclidean Yang-Mills theory undergoes a phase transition on a finite symmetrical four-torus when the length of the sides $l$ decreases to a critical value $l_c$. For $l>l_c$ continuum reduction holds so that at leading order in $N$, there are no finite size effects in Wilson and Polyakov loops. This produces the exciting possibility of solving numerically for the meson sector of planar QCD at a cost substantially smaller than that of quenched SU(3).

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