Chiral properties of pseudoscalar mesons on a quenched 204 lattice with overlap fermions

S. J. Dong, T. Draper, I. Horváth, F. X. Lee, K. F. Liu, J. B. Zhang

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


The chiral properties of the pseudoscalar mesons are studied numerically on a quenched 204 lattice with the overlap fermion. We elucidate the role of the zero modes in the meson propagators, particularly that of the pseudoscalar meson. The non-perturbative renormalization constant ZA is determined from the axial Ward identity and is found to be almost independent of the quark mass for the range of quark masses we study; this implies that the O(a2) error is small. The pion decay constant fπ, is calculated from which we determine the lattice spacing to be 0.148 fm. We look for the quenched chiral log in the pseudoscalar decay constants and the pseudoscalar masses and we find clear evidence for its presence. The chiral log parameter δ is determined to be in the range 0.15-0.4, which is consistent with that predicted from quenched chiral perturbation theory.

Original languageEnglish
Article number054507
JournalPhysical review D
Issue number5
StatePublished - 2002

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


Dive into the research topics of 'Chiral properties of pseudoscalar mesons on a quenched 204 lattice with overlap fermions'. Together they form a unique fingerprint.

Cite this