The running coupling of 8 flavors and 3 colors

Zoltan Fodor, Kieran Holland, Julius Kuti, Santanu Mondal, Daniel Nogradi, Chik Him Wong

Research output: Contribution to journalArticle

26 Citations (Scopus)


Abstract: We compute the renormalized running coupling of SU(3) gauge theory coupled to Nf = 8 flavors of massless fundamental Dirac fermions. The recently proposed finite volume gradient flow scheme is used. The calculations are performed at several lattice spacings allowing for a controlled continuum extrapolation. The results for the discrete β-function show that it is monotonic without any sign of a fixed point in the range of couplings we cover. As a cross check the continuum results are compared with the well-known perturbative continuum β-function for small values of the renormalized coupling and perfect agreement is found.

Original languageEnglish
Article number19
JournalJournal of High Energy Physics
Issue number6
Publication statusPublished - Jun 9 2015



  • Lattice Gauge Field Theories
  • Lattice Quantum Field Theory

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Fodor, Z., Holland, K., Kuti, J., Mondal, S., Nogradi, D., & Wong, C. H. (2015). The running coupling of 8 flavors and 3 colors. Journal of High Energy Physics, 2015(6), [19].