Lattice study of infrared behaviour in SU(3) gauge theory with twelve massless flavours

Chi-Jen Lin*, Kenji Ogawa, Hiroshi Ohki, Eigo Shintani

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

25 Scopus citations

Abstract

We present details of a lattice study of infrared behaviour in SU(3) gauge theory with twelve massless fermions in the fundamental representation. Using the stepscaling method, we compute the coupling constant in this theory over a large range of scale. The renormalisation scheme in this work is defined by the ratio of Polyakov loop correlators in the directions with different boundary conditions. We closely examine systematic effects, and find that they are dominated by errors arising from the continuum extrapolation. Our investigation suggests that SU(3) gauge theory with twelve flavours contains an infrared fixed point.

Original languageEnglish
Article number96
JournalJournal of High Energy Physics
Volume2012
Issue number8
DOIs
StatePublished - 2012

Keywords

  • Lattice gauge field theories
  • Renormalization group
  • Technicolor and composite models

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