Lambda-parameter of lattice QCD with the overlap-Dirac operator

Details Lambda-parameter of lattice QCD with the overlap-Dirac operator Lambda-parameter of lattice QCD with the overlap-Dirac operator

1999-09-27

arxiv.org/abs/hep-lat/9909158v1

Nucl.Phys. B571 (2000) 257-266

Physics

High Energy Physics

High Energy Physics - Lattice

11 pages, 2 figures

Scientific paper

10.1016/S0550-3213(99)00798-1

We compute the ratio $\Lambda_L/\Lambda_{\bar{MS}}$ between the scale parameter $\Lambda_L$, associated with a lattice formulation of QCD using the overlap-Dirac operator, and $\Lambda_{\bar{MS}}$ of the $\bar{\rm MS}$ renormalization scheme. To this end, the necessary one-loop relation between the lattice coupling $g_0$ and the coupling renormalized in the $\bar{{\rm MS}}$ scheme is calculated, using the lattice background field technique.

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