Topological charge fluctuations and low-lying Dirac eigenmodes

S. J. Dong, T. Draper, I. Horváth, N. Isgur, F. X. Lee, J. McCune, J. B. Zhang, H. B. Thacker

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We discuss the utility of low-lying Dirac eigenmodes for studying the nature of topological charge fluctuations in QCD. The implications of previous results using the local chirality histogram method are discussed, and the new results using the overlap Dirac operator in Wilson gauge backgrounds at lattice spacings ranging from a ≈ 0.04 fm to a ≈ 0.12 fm are reported. While the degree of local chirality does not change appreciably closer to the continuum limit, we find that the size and density of local structures responsible for chiral peaking do change significantly. The resulting values are in disagreement with the assumptions of the Instanton Liquid Model. We conclude that the fluctuations of topological charge in the QCD vacuum are not locally quantized.

Original languageEnglish
Pages (from-to)563-565
Number of pages3
JournalNuclear Physics B - Proceedings Supplements
StatePublished - Mar 2002

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics


Dive into the research topics of 'Topological charge fluctuations and low-lying Dirac eigenmodes'. Together they form a unique fingerprint.

Cite this