Slope of the beta function at the fixed point of SU(2) gauge theory with six or eight flavors

@article{Leino2018SlopeOT,
  title={Slope of the beta function at the fixed point of SU(2) gauge theory with six or eight flavors},
  author={Viljami Leino and Kari Rummukainen and Kimmo Tuominen},
  journal={Physical Review D},
  year={2018},
  volume={98},
  pages={054503}
}
We consider measurement of the leading irrelevant scaling exponent $\gamma_g^\ast$, given by the slope of the beta function, at the fixed point of SU(2) gauge theory with six or eight flavors. We use the running coupling measured using the gradient flow method and perform the continuum extrapolation by interpolating the measured beta function. We study also the dependence of the results on different discretization of the flow. For the eight flavor theory we find $\gamma_g^\ast=0.19(8)_{-0.09… Expand
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