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arXiv · 0709.4110

Logarithmic link smearing for full QCD

Stephan Durr
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Abstract

A Lie-algebra based recipe for smoothing gauge links in lattice field theory is presented, building on the matrix logarithm. With or without hypercubic nesting, this LOG/HYL smearing yields fat links which are differentiable w.r.t. the original ones. This is essential for defining UV-filtered ("fat link") fermion actions which may be simulated with a HMC-type algorithm. The effect of this smearing on the distribution of plaquettes and on the residual mass of tree-level O(a)-improved clover fermions in quenched QCD is studied.

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BibTeXRIS

Stephan Durr. 2009-03-16. Logarithmic link smearing for full QCD. https://doi.org/10.1016/j.cpc.2009.02.013

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