Confinement versus asymptotic freedom

Details Confinement versus asymptotic freedom Confinement versus asymptotic freedom

2002-03-06

arxiv.org/abs/hep-th/0203059v1

Physics

High Energy Physics

High Energy Physics - Theory

13 pages

Scientific paper

I put forward the low-energy confining asymptote of the solution $$ (valid for large macroscopic contours C of the size $>>1/\Lambda_{QCD}$) to the large N Loop equation in the D=4 U(N) Yang-Mills theory with the asymptotic freedom in the ultraviolet domain. Adapting the multiscale decomposition characteristic of the Wilsonean renormgroup, the proposed Ansatz for the loop-average is composed in order to sew, along the lines of the bootstrap approach, the large N weak-coupling series for high-momentum modes with the $N\to{\infty}$ limit of the recently suggested stringy representation of the 1/N strong-coupling expansion Dub4 applied to low-momentum excitations. The resulting low-energy stringy theory can be described through such superrenormalizable deformation of the noncritical Liouville string that, being devoid of ultraviolet divergences, does not possess propagating degrees of freedom at short-distance scales $<<1/{\sqrt{\sigma_{ph}}}$, where $\sigma_{ph}\sim{(\Lambda_{QCD})^{2}}$ is the physical string tension.

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