Topological susceptibility in the SU(3) gauge theory

Details Topological susceptibility in the SU(3) gauge theory Topological susceptibility in the SU(3) gauge theory

2004-07-07

arxiv.org/abs/hep-th/0407052v2

Phys.Rev.Lett. 94 (2005) 032003

Physics

High Energy Physics

High Energy Physics - Theory

Final version to appear on Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.94.032003

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'.

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