Abstract
In this contribution I present a brief summary of recent progress in selected Lattice QCD techniques and subsequently illustrate them using the example of the current calculations of moments of meson distribution amplitude as well as of a direct evaluation of meson distribution amplitude.
Highlights
Lattice Quantum Chromodynamics: theoretical ’experiments’Lattice QCD is one of the few formulations of Quantum Chromodynamics which is fully nonperturbative and allows to estimate QCD predictions with all the systematic uncertainties under control
It is clearly an impossible task to summarize the progress in numerical Monte Carlo simulations of Quantum Chromodynamics of the last two years this short review
Pion distribution amplitude is one of the many hadron structure functions which describe the content of hadrons, in that particular case of the pion
Summary
Lattice QCD is one of the few formulations of Quantum Chromodynamics which is fully nonperturbative and allows to estimate QCD predictions with all the systematic uncertainties under control. It is a numerical framework in which one can perform theoretical ’experiments’ with his favorite quantum field theory. All particle properties can be extracted from euclidean correlation functions. These theoretical ’experiments’ must follow the rules of quantum field theory and do not make resort to any specific model. One of the great advantage of this setup is that the freedom of the values of free parameters allows to study various unreal universes, for instance where light quarks are much heavier than in Nature or where the light and strange quarks are degenerate
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