Low-lying Dirac operator eigenvalues, lattice effects and random matrix theory

Details Low-lying Dirac operator eigenvalues, lattice effects and random matrix theory Low-lying Dirac operator eigenvalues, lattice effects and random matrix theory

2011-12-08

arxiv.org/abs/1112.1914v1

Physics

High Energy Physics

High Energy Physics - Lattice

Contribution to the XXIX International Symposium on Lattice Field Theory, Squaw Valley, Lake Tahoe, California. To appear as P

Scientific paper

Recently, random matrix theory predictions for the distribution of low-lying Dirac operator eigenvalues have been extended to include lattice effects for both staggered and Wilson fermions. We computed low-lying eigenvalues for the Hermitian Wilson-Dirac operator and for improved staggered fermions on several quenched ensembles with size $\approx 1.5$ fm. Comparisons to the expectations from RMT with lattice effects included are made. Wilson RMT describes our Wilson data nicely. For improved staggered fermions we find strong indications that taste breaking effects on the low-lying spectrum disappear in the continuum limit, as expected from staggered RMT.

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