Quark-antiquark potential in the analytic approach to QCD

Abstract

The quark-antiquark potential is constructed by making use of a new analytic running coupling in QCD. This running coupling arises under ``analytization'' of the renormalization group equation. The rising behavior of the quark-antiquark potential at large distances, which provides the quark confinement, is shown explicitly. At small distances, the standard behavior of this potential originating in the QCD asymptotic freedom is revealed. The higher loop corrections and the scheme dependence of the approach are briefly discussed.

REVTeX 3.1, 12 pages with 3 EPS figures. A new section is added

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• Observing Long Colour Flux Tubes in SU(2) Lattice Gauge Theory
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