Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Functional Renormalization Group approach for Yang-Mills fields   We explore the gauge dependence of the effective average action within the
functional renormalization group (FRG) approach. It is shown that in the
framework of standard definitions of FRG for the Yang-Mills theory, the
effective average action remains gauge-dependent on-shell, independent on the
use of truncation scheme. Furthermore, we propose a new formulation of the FRG,
based on the use of composite operators. In this case one can provide on-shell
gauge-invariance for the effective average action and universality of
$S$-matrix.

10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs