Approximate Ginsparg-Wilson fermions: A first test
نویسنده
چکیده
We construct a 4-d lattice Dirac operator D using a systematical expansion in terms of simple operators on the lattice. The GinspargWilson equation turns into a system of coupled equations for the expansion coefficients ofD. We solve these equations for a finite parametrization of D and find an approximate solution of the Ginsparg-Wilson equation. We analyze the spectral properties of our D for various ensembles of quenched SU(3) configurations. Improving the gauge field action considerably improves the spectral properties of our D. PACS: 11.15.Ha
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