Numerical determination of the QCD β function

Gavai, R. V. ; Karsch, F. (1986) Numerical determination of the QCD β function Physical Review Letters, 57 (1). pp. 40-43. ISSN 0031-9007

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The β function of SU(3) lattice gauge theory with three flavors of light dynamical quarks is obtained numerically by use of the (improved) ratio method. It appears to have a dip structure similar to that found in the theory without quarks. Our data seem to suggest that deviations from asymptotic scaling may be small for β≥ 5.3.

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