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Volume 336 - XIII Quark Confinement and the Hadron Spectrum (Confinement2018) - G: Strongly Coupled Theories
Infrared Behaviour of SU(2) Gauge Theory with $N_f$ fundamental flavours
V. Leino,* K. Rummukainen, J. Suorsa, K. Tuominen, S. Tähtinen
*corresponding author
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Pre-published on: 2019 September 12
Published on: 2019 September 26
We review our recent results on the infrared behaviour of the SU(2) gauge theory with $N_f$ massless fundamental flavour fermions. We have analyzed the running of the coupling in SU(2) gauge theories with six and eight fermionic flavours using the gradient flow step scaling method.
From the running of the coupling, we see a clear indication of an infrared stable fixed point in theories with six and eight flavours. These results are confirmed by our mass spectrum study, where we varied the number of flavours from two to six. We also compute the anomalous dimensions of mass and coupling.
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