Effects of low-lying fermion modes in the epsilon regime

Details Effects of low-lying fermion modes in the epsilon regime Effects of low-lying fermion modes in the epsilon regime

2004-09-17

arxiv.org/abs/hep-lat/0409103v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 5 figures, Talk presented at Lattice2004(chiral), Fermilab, June 21-26, 2004

Scientific paper

10.1016/j.nuclphysbps.2004.11.26

We investigate the effects of low-lying fermion modes on the QCD partition function in the epsilon-regime. With the overlap Dirac operator we calculate several tens of low-lying fermion eigenvalues on the quenched lattice. By partially incorporating the fermion determinant through the truncated determinant approximation, we calculate the partition function and other related quantities for Nf = 1 and compare them with the theoretical predictions obtained by Leutwyler and Smilga.

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