On the Locality and Scaling of Overlap Fermions at Coarse Lattice Spacings

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dc.creatorDraper, Terrence
dc.creatorMathur, Nilmani
dc.creatorZhang, Jianbo
dc.creatorAlexandru, Andrei
dc.creatorChen, Ying
dc.creatorDong, Shao-Jing
dc.creatorHorvath, Ivan
dc.creatorLee, Frank X.
dc.creatorLiu, Keh-Fei
dc.creatorTamhankar, Sonali
dc.date2006-09-21
dc.date.accessioned2026-07-07T07:24:05Z
dc.date.available2026-07-07T07:24:05Z
dc.descriptionThe overlap fermion offers the considerable 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, with appropriate choice of negative Wilson's mass, 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 1 GeV is too low to have satisfactory localization. Furthermore, hadronic masses (available on the two coarser lattices) scale very well.
dc.description17 pages, 18 figures
dc.identifierhttps://arxiv.org/abs/hep-lat/0609034
dc.identifierhttp://arxiv.org/abs/hep-lat/0609034
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/116215
dc.subjectHigh Energy Physics - Lattice
dc.titleOn the Locality and Scaling of Overlap Fermions at Coarse Lattice Spacings
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