Chiral symmetry breaking, instantons and the ultimate quenched calculation

Details Chiral symmetry breaking, instantons and the ultimate quenched calculation Chiral symmetry breaking, instantons and the ultimate quenched calculation

1998-08-17

arxiv.org/abs/hep-lat/9808017v1

Nucl.Phys.Proc.Suppl. 73 (1999) 617-619

Physics

High Energy Physics

High Energy Physics - Lattice

LATTICE98(confine)

Scientific paper

10.1016/S0920-5632(99)85153-6

We calculate the spectral density of the Dirac operator over an ensemble of
configurations composed of overlapping instantons and anti-instantons. We find
evidence that the spectral density diverges in the limit of small eigenvalues.
This indicates the breaking of chiral symmetry and also provides evidence that
quenched QCD may be pathological in nature.

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