Topological susceptibility in the SU(3) gauge theory
High Energy Physics - Theory
2009-11-10 v2 High Energy Physics - Lattice
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'.
Keywords
Cite
@article{arxiv.hep-th/0407052,
title = {Topological susceptibility in the SU(3) gauge theory},
author = {Luigi Del Debbio and Leonardo Giusti and Claudio Pica},
journal= {arXiv preprint arXiv:hep-th/0407052},
year = {2009}
}
Comments
Final version to appear on Phys. Rev. Lett