Overlap fermions on a 204 lattice

K. F. Liu, S. J. Dong, F. X. Lee, J. B. Zhang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We report results on hadron masses, fitting of the quenched chiral log, and quark masses from Neuberger's overlap fermion on a quenched 204 lattice with lattice spacing a = 0.15 fm. We used the improved gauge action which is shown to lower the density of small eigenvalues for H2 as compared to the Wilson gauge action. This makes the calculation feasible on 64 nodes of CRAY-T3E. Also presented is the pion mass on a small volume (63 × 12 with a Wilson gauge action at β = 5.7). We find that for configurations that the topological charge Q ≠ 0, the pion mass tends to a constant and for configurations with trivial topology, it approaches zero possibly linearly with the quark mass.

Original languageEnglish
Pages (from-to)752-755
Number of pages4
JournalNuclear Physics B - Proceedings Supplements
Issue number1-3
StatePublished - Mar 2001

Bibliographical note

Funding Information:
This work is partially supported by U.S. DOE Grants DEFG05-84ER40154 and DE-FG02-95ER40907.

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics


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