Search for the IR fixed point in the Twisted Polyakov Loop scheme (II)

Abstract

We measure the renormalized coupling in the Twisted Polyakov loop scheme for SU(3) gauge theory coupled with $N_f=12$ fundamental fermions. To find the infrared fixed point of this theory, we focus on the step scaling function for the renormalized coupling. We take the continuum limit using the linear function of $(a/L{)}^2$ and a constant fit function. We find that there is a sizeable systematic error due to the choice of the continuum extrapolation function in the low energy region. We will give some directions to reduce the systematic errors.

7pages, To appear in the proceedings for the 28th International Symposium on Lattice Field Field: Lattice 2010

References in corpus (4)

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• A new scheme for the running coupling constant in gauge theories using Wilson loops
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Cited by in corpus (5)

• Determining the conformal window: SU(2) gauge theory with N_f = 4, 6 and 10 fermion flavours
• Nonperturbative beta function of twelve-flavor SU(3) gauge theory
• Nonperturbative beta function of eight-flavor SU(3) gauge theory
• Nonperturbative improvement of SU(2) lattice gauge theory with adjoint or fundamental flavors
• QCD-like technicolor on the lattice