Gribov noise on the lattice axial current renormalisation constant

  title={Gribov noise on the lattice axial current renormalisation constant},
  author={M. L. Paciello and S. Petrarca and B. Taglienti and A. Vladikas},
  journal={Physics Letters B},
  • M. L. Paciello, S. Petrarca, +1 author A. Vladikas
  • Published 1994
  • Physics
  • Physics Letters B
  • Abstract We study the influence of Gribov copies, in the Landau gauge, on the lattice renormalisation constant Z A of the axial current, obtained from a Ward identity on quark state correlation functions, with the Clover action, in quenched SU(3) gauge theory. A comparison between the gauge invariant determination of Z A and the gauge dependent one is discussed. On a 16 3 ×32 lattice at β =6.0 and with K = 0.1425, the values, on a sample of 36 configurations, are Z A =1.08(5) (gauge dependent… CONTINUE READING