Topological susceptibility in full QCD: lattice results versus the prediction from the QCD partition function with granularity

Details Topological susceptibility in full QCD: lattice results versus the prediction from the QCD partition function with granularity Topological susceptibility in full QCD: lattice results versus the prediction from the QCD partition function with granularity

2001-03-14

arxiv.org/abs/hep-lat/0103011v2

Nucl.Phys. B611 (2001) 281-310

Physics

High Energy Physics

High Energy Physics - Lattice

24 pages, 9 figures containing 21 graphs; v2: modifications to account for the changes in the SESAM/TXL data, otherwise minor

Scientific paper

10.1016/S0550-3213(01)00325-X

Recent lattice data from CP-PACS, UKQCD, SESAM/TXL and the Pisa group regarding the quark mass dependence of the topological susceptibility in 2-flavour QCD are compared to each other and to theoretical expectations. The latter get specified by referring to the QCD finite-volume partition function with ``granularity'' which accounts for the entropy brought by instantons and anti-instantons. The chiral condensate in $N_f=2$ QCD, if determined by this method, turns out surprisingly large.

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