We report our calculation of the pion decay constant fπ, the axial renormalization constant ZA, and the quenched chiral logarithms from the overlap fermions. The calculation is done on a quenched 204 lattice at a=0.148 fm using tree level tadpole improved gauge action. The smallest pion mass we reach is about 280 MeV. The lattice size is about 4 times the Compton wavelength of the lowest mass pion.
@article{arxiv.hep-lat/0110220,
title = {Pion Decay Constant, $Z_A$ and Chiral Log from Overlap Fermions},
author = {S. J. Dong and T. Draper and I. Horvath and F. X. Lee and J. B. Zhang},
journal= {arXiv preprint arXiv:hep-lat/0110220},
year = {2008}
}