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 π and ρ masses at a fixed ℳπ/ℳρ ratio have weak O(a2) dependence.
|Number of pages||3|
|Journal||Nuclear Physics B - Proceedings Supplements|
|State||Published - Mar 2000|
Bibliographical noteFunding Information:
This work is partially supported by DOE Grants DE-FG05-84ER40154 and DE-FG02-95ER40907. We thank R. Edwards for sharing his experience in implementing the sign function solver. We also thank H. Neuberger for stimulating discussions.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics