Abstract
The overlap fermion offers the tremendous advantage of exact chiral symmetry on the lattice, but is numerically intensive. This can be made affordable while still providing large lattice volumes, by using coarse lattice spacing, given that good scaling and localization properties are established. Here, using overlap fermions on quenched Iwasaki gauge configurations, we demonstrate directly that the overlap Dirac operator's range is comfortably small in lattice units for each of the lattice spacings 0.20 fm, 0.17 fm, and 0.13 fm (and scales to zero in physical units in the continuum limit). In particular, our direct results contradict recent speculation that an inverse lattice spacing of 1GeV is too low to have satisfactory localization. Furthermore, hadronic masses (available on the two coarser lattices) scale very well.
Original language | English |
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Journal | Proceedings of Science |
Volume | 20 |
State | Published - 2005 |
Event | 23rd International Symposium on Lattice Field Theory, LAT 2005 - Dublin, Ireland Duration: Jul 25 2005 → Jul 30 2005 |
Bibliographical note
Funding Information:¤This research is supported in part by the U.S. Department of Energy under grants DE-FG05-84ER40154, DE-FG02-02ER45967, and DE-FG02-95ER40907. †Speaker.
Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-Non Commercial-ShareAlike Licence.
ASJC Scopus subject areas
- General