On running couplings in gauge theories from type-IIB supergravity

Details On running couplings in gauge theories from type-IIB supergravity On running couplings in gauge theories from type-IIB supergravity

1999-02-17

arxiv.org/abs/hep-th/9902125v3

Phys.Lett. B454 (1999) 270-276

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, latex, v2: Another form of the solution is given and a reference is added, v3: a reference is added, final form to a

Scientific paper

10.1016/S0370-2693(99)00393-7

We construct an explicit solution of type-IIB supergravity describing the strong coupling regime of a non-supersymmetric gauge theory. The latter has a running coupling with an ultraviolet stable fixed point corresponding to the N=4 SU(N) super-Yang-Mills theory at large N. The running coupling has a power law behaviour, argued to be universal, that is consistent with holography. Around the critical point, our solution defines an asymptotic expansion for the gauge coupling beta-function. We also calculate the first correction to the Coulombic quark-antiquark potential.

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