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arXiv · hep-th/0510077

Anti-Screening by Quarks and the Structure of the Inter-Quark Potential

E. Bagan·M. Lavelle·D. McMullan
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Abstract

The inter-quark potential is dominated by anti-screening effects which underly asymptotic freedom. We calculate the order g^6 anti-screening contribution from light fermions and demonstrate that these effects introduce a non-local divergence. These divergences are shown to make it impossible to define a coupling renormalisation scheme that renormalises this minimal, anti-screening potential. Hence the beta function cannot be divided into screening and anti-screening parts beyond lowest order. However, we then demonstrate that renormalisation can be carried out in terms of the anti-screening potential.

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E. Bagan, M. Lavelle, D. McMullan. 2005-11-15. Anti-Screening by Quarks and the Structure of the Inter-Quark Potential. https://doi.org/10.1016/j.physletb.2005.11.038

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