Gradient Flow Coupling in the SU(2) gauge theory with two adjoint fermions

Preprint number: CP3-Origins-2015-50 DNRF90 and DIAS-2015-50
Author: Jarno Rantaharju (CP3-Origins & IMADA & RIKEN Advanced Institute for Computational Science)
External link: arXiv.org

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We study SU(2) gauge theory with two fermion flavors in the adjoint representation. Using a clover improved HEX smeared action and the gradient flow running coupling allows us to simulate with larger lattice size than before. We find an infrared fixed point after a continuum extrapolation in the range 4.5 < g^{*2} < 5. We also measure the mass anomalous dimension and find the value 0.25 < gamma^* < 0.28 at the fixed point.