Lattice QCD on Small Computers

Details Lattice QCD on Small Computers Lattice QCD on Small Computers

1995-07-07

arxiv.org/abs/hep-lat/9507010v3

Phys.Lett. B361 (1995) 87-94

Physics

High Energy Physics

High Energy Physics - Lattice

15 pages, 3 figs incl as LaTex pictures Minor additions to tables and text

Scientific paper

10.1016/0370-2693(95)01131-9

We demonstrate that lattice QCD calculations can be made $10^3$--$10^6$ times faster by using very coarse lattices. To obtain accurate results, we replace the standard lattice actions by perturbatively-improved actions with tadpole-improved correction terms that remove the leading errors due to the lattice. To illustrate the power of this approach, we calculate the static-quark potential, and the charmonium spectrum and wavefunctions using a desktop computer. We obtain accurate results that are independent of the lattice spacing and agree well with experiment.

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