Recent results on the running coupling in QCD with two massless flavours

M. Della Morte; R. Frezzotti; J. Heitger; F. Knechtli; J. Rolf; R. Sommer; U. Wolff

doi:10.1016/S0920-5632(03)01579-2

Recent results on the running coupling in QCD with two massless flavours

High Energy Physics - Lattice 2009-11-07 v2

Authors: M. Della Morte , R. Frezzotti , J. Heitger , F. Knechtli , J. Rolf , R. Sommer , U. Wolff

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We report on the latest results on the running coupling of two flavour QCD in the Schr\"odinger functional scheme. Results for the step scaling function are obtained from simulations on lattices $L/a=8$ and $L/a=16$ which confirm the first results from lattices $L/a=4,5,6$ presented one year ago by the ALPHA collaboration. We also discuss some algorithmic aspects, in particular concerning the occurrence of metastable states. A modified sampling, in order to estimate the proper weight of these states in the path integral, is proposed and tested.

Keywords

running coupling two flavour QCD Schrodinger functional step scaling function metastable states

Cite

@article{arxiv.hep-lat/0209023,
  title  = {Recent results on the running coupling in QCD with two massless flavours},
  author = {M. Della Morte and R. Frezzotti and J. Heitger and F. Knechtli and J. Rolf and R. Sommer and U. Wolff},
  journal= {arXiv preprint arXiv:hep-lat/0209023},
  year   = {2009}
}

Comments

Lattice2002(improve), 3 pages, 2 figures

Recent results on the running coupling in QCD with two massless flavours

Abstract

Keywords

Cite

Comments

Related papers