Gradient flow and IR fixed point in SU(2) with Nf=8 flavors

Published 11 Nov 2015 in hep-lat | (1511.03563v1)

Abstract: We study the running of the coupling in SU(2) gauge theory with 8 massless fundamental representation fermion flavours, using the gradient flow method with the Schr\"odinger functional boundary conditions. Gradient flow allows us to measure robust continuum limit for the step scaling function. The results show a clear indication of infrared fixed point consistent with perturbation theory.

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