Fundamental parameters of QCD

Details Fundamental parameters of QCD Fundamental parameters of QCD

2002-04-04

arxiv.org/abs/physics/0204015v1

Physics

Computational Physics

Contribution to proceedings of NIC Symposium 2001, 13 pages, 7 figures, uses nic-series.cls

Scientific paper

The theory of strong interactions, QCD, is described in terms of a few parameters, namely the strong coupling constant alpha_s and the quark masses. We show how these parameters can be determined reliably using computer simulations of QCD on a space-time lattice, and by employing a finite-size scaling method, which allows to trace the energy dependence of alpha_s and quark masses over several orders of magnitude. We also discuss methods designed to reduce the effects of finite lattice spacing and address the issue of computer resources required.

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