Least-Squared Optimized Polynomials for Smeared Link Actions

Details Least-Squared Optimized Polynomials for Smeared Link Actions Least-Squared Optimized Polynomials for Smeared Link Actions

2004-01-03

arxiv.org/abs/hep-lat/0401007v3

Comput.Phys.Commun. 158 (2004) 137-149

Physics

High Energy Physics

High Energy Physics - Lattice

12 pages, 9 figures, Final version appeared in Comp.Phys.Comm

Scientific paper

10.1016/j.cpc.2004.01.003

We introduce a numerical method for generating the approximating polynomials used in fermionic calculations with smeared link actions. We investigate the stability of the algorithm and determine the optimal weight function and the optimal type of discretization. The achievable order of polynomial approximation reaches several thousands allowing fermionic calculations using the Hypercubic Smeared Link action even with physical quark masses.

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