文章基本信息

标题：The impact of localized overlap eigenmodes on RMT measurements and topology
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作者：A. Hasenfratz, R.,Hoffmann ; S. Schaefer
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2007
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The low energy eigenmodes of the continuum QCD Dirac operator are extended, but on the lattice, due to discretization effects, the Dirac operator can have localized eigenmodes. These nonphysical modes can introduce strong lattice artifacts for observables that are sensitive to chiral symmetry, especially in mixed action simulations. We study how these lattice artifacts depend on the parameters of the overlap operator and their effect on the distribution on the Dirac eigenmodes and the topological susceptibility.