文章基本信息

标题：Topology and chiral perturbation theory from the Wilson Dirac spectrum
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作者：A. Deuzeman ; U. Wenger ; J. Wuilloud 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2011
卷号：2011
期号：Lattice2011
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We study the spectrum of the hermitian Wilson Dirac operator in the e-regime of QCD in the quenched approximation and compare it to predictions from Wilson Random Matrix Theory. Using the distributions of single eigenvalues in the microscopic limit and for specific topological charge sectors, we examine the possibility of extracting estimates of the low energy constants which parametrise the lattice artefacts in Wilson chiral perturbation theory. The topological charge of the field configurations is obtained from a field theoretical definition as well as from the flow of eigenvalues of the hermitianWilson Dirac operator, and we determine the extent to which the two are correlated.