Testing the fixed-point QCD action and the construction of chiral currents

Details Testing the fixed-point QCD action and the construction of chiral currents Testing the fixed-point QCD action and the construction of chiral currents

2002-05-07

arxiv.org/abs/hep-lat/0205010v2

Nucl.Phys.B643:280-320,2002

Physics

High Energy Physics

High Energy Physics - Lattice

50 pages, 19 figures; misprints corrected, discussion on covariant densities extended, new appendix added

Scientific paper

10.1016/S0550-3213(02)00742-3

We present the first set of quenched QCD measurements using the recently parametrized fixed-point Dirac operator D^FP. We also give a general and practical construction of covariant densities and conserved currents for chiral lattice actions. The measurements include (a) hadron spectroscopy, (b) corrections of small chiral deviations, (c) the renormalized quark condensate from finite-size scaling and, independently, spectroscopy, (d) the topological susceptibility, (e) small eigenvalue distributions and random matrix theory, and (f) local chirality of near-zero modes and instanton-dominance.

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