Hadron Masses and Quark Condensate from Overlap Fermions

Details Hadron Masses and Quark Condensate from Overlap Fermions Hadron Masses and Quark Condensate from Overlap Fermions

1999-09-08

arxiv.org/abs/hep-lat/9909061v2

Nucl.Phys.Proc.Suppl. 83 (2000) 636-638

Physics

High Energy Physics

High Energy Physics - Lattice

LATTICE99(Chiral Fermions), 3 pages, 6 figures

Scientific paper

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.

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