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

Understand

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.