Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A dynamical mechanism for generating quark confinement   We explore the dynamical mechanism for generating the infrared singular
quark-gluon vertex and quark confinement based on the gauge invariance in
covariant-gauge quantum chromodynamics(QCD). We first derive the
gauge-invariance constraint relation for the infrared-limit behavior of the
quark-gluon vertex, which shows the mechanism for generating the infrared
behavior of the quark-gluon vertex. We hence unravel a novel mechanism for
generating an infrared singular quark-gluon vertex and then a linear rising
potential for confining massive quarks, where the infrared singularity in the
form factors composing the quark-ghost scattering kernel plays a crucial role.
The mechanism for linking chiral symmetry breaking with quark confinement is
also shown.

8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom