Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anti-Screening by Quarks and the Structure of the Inter-Quark Potential   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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The categories of this paper are: stat
23
The categories of this paper are: solv-int
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The categories of this paper are: econ
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex