Topological susceptibility in the SU(3) gauge theory

Luigi Del Debbio, Leonardo Giusti, Claudio Pica

Research output: Contribution to journalArticlepeer-review

Abstract

We compute the topological susceptibility for the SU(3) Yang--Mills theory by employing the expression of the topological charge density operator suggested by Neuberger's fermions. In the continuum limit we find r_0^4 chi = 0.059(3), which corresponds to chi=(191 +/- 5 MeV)^4 if F_K is used to set the scale. Our result supports the Witten--Veneziano explanation for the large mass of the eta'.
Original languageEnglish
Number of pages4
JournalPhysical Review Letters
Volume94
Issue number3
DOIs
Publication statusPublished - 7 Jul 2004

Keywords

  • hep-th
  • hep-lat

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