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A comparative study of overlap and staggered fermions in QCD

✍ Scribed by S. Dürr; Ch. Hoelbling; U. Wenger

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
119 KB
Volume
140
Category
Article
ISSN
0920-5632

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✦ Synopsis

We perform a comparative study of the infrared properties of overlap and staggered fermions in QCD. We observe that the infrared spectrum of the APE/HYP improved staggered Dirac operator develops a four-fold near-degeneracy and is in quantitative agreement with the infrared spectrum of the overlap operator. The neardegeneracy allows us to identify the zero modes of the staggered operator and we find that the number of zero modes is in line with the topological index of the overlap operator.

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