Hadron Masses and Quark Condensate from Overlap Fermions

Abstract

We present results on hadron masses and quark condensate from Neuberger's overlap fermion. The scaling and chiral properties and finite volume effects from this new Dirac operator are studied. We find that the generalized Gell-Mann-Oakes-Renner relation is well satisfied down to the physical u and d quark mass range. We find that in the range of the lattice spacing we consider, the $\pi$ and $\rho$ masses at a fixed $m_{\pi }/m_{\rho }$ ratio have weak $O(a^2)$ dependence.

LATTICE99(Chiral Fermions), 3 pages, 6 figures

Cited by in corpus (7)

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• Chiral Symmetry, Quark Mass, and Scaling of the Overlap Fermions
• Chiral Properties of Pseudoscalar Mesons on a Quenched $20^4$ Lattice with Overlap Fermions
• Lambda-parameter of lattice QCD with the overlap-Dirac operator
• An alternative to domain wall fermions
• Perturbative renormalization of moments of quark momentum, helicity and transversity distributions with overlap and Wilson fermions
• Progress using generalized lattice Dirac operators to parametrize the Fixed-Point QCD action