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标题：Systematic Errors of the MCRG Method
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作者：S. Catterall ; L. Del Debbio ; J. Giedt 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 present a Monte Carlo Renormalisation Group (MCRG) study of the SU(2) gauge theory with two Dirac fermions in the adjoint representation. Using the two–lattice matching technique we measure the running of the coupling and the anomalous mass dimension. We find slow running of the coupling, compatible with an infrared fixed point. Assuming this running is negligible we find a vanishing anomalous dimension, g = 􀀀0:03(13), however without this assumption our uncertainty in the running of the coupling leads to a much larger range of allowed values, 􀀀0:6 . g . 0:6. We discuss the systematic errors affecting the current analysis and possible improvements.