2+1 flavor QCD with the fixed point action in the $ϵ$-regime

Abstract

We generated configurations with the approximate fixed-point Dirac operator $D_{\mathrm{FP}}$ on a $12^4$ lattice with $a\approx 0.13$fm where the scale was set by $r_0$. The distributions of the low lying eigenvalues in different topological sectors were compared with those of the Random Matrix Theory which leads to a prediction of the chiral condensate.

Comments: 6 pages, 5 figures, presented at the XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg, Germany