Link smearing considered as MCRG transformation

Details Link smearing considered as MCRG transformation Link smearing considered as MCRG transformation

2011-03-28

arxiv.org/abs/1103.5368v2

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 3 figures; minor corrections

Scientific paper

Gauge link smearing is widely used in lattice QCD computations. The idea is to remove the local (UV) fluctuations of the gauge field configurations while keeping the longer-range (IR) properties intact. Important applications are in the definitions of interpolating hadron operators as well as in updating the gauge field configurations with dynamical quarks in the so-called Hybrid Monte Carlo (HMC) algorithm. Here we study the effectiveness of various smearing methods and try to quantify these with tools known from Monte Carlo Renormalization Group (MCRG).

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