Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ghost propagator and ghost-gluon vertex from Schwinger-Dyson equations   We study an approximate version of the Schwinger-Dyson equation that controls
the nonperturbative behavior of the ghost-gluon vertex, in the Landau gauge. In
particular, we focus on the form factor that enters in the dynamical equation
for the ghost dressing function, in the same gauge, and derive its integral
equation, in the "one-loop dressed" approximation. We consider two special
kinematic configurations, which simplify the momentum dependence of the unknown
quantity; in particular, we study the soft gluon case, and the well-known
Taylor limit. When coupled with the Schwinger-Dyson equation of the ghost
dressing function, the contribution of this form factor provides considerable
support to the relevant integral kernel. As a consequence, the solution of this
coupled system of integral equations furnishes a ghost dressing function that
reproduces the standard lattice results rather accurately, without the need to
artificially increase the value of the gauge coupling.

8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an