Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Calculation of the non-perturbative strong coupling from first
  principles   The success of the screened massive expansion is investigated in the
framework of a screened momentum-subtraction scheme for the running of the
strong coupling in pure Yang-Mills theory. By the exact Slavnov-Taylor and
Nielsen identities, a very predictive and self-contained set of stationary
conditions are derived for the optimization of the fixed-coupling expansion,
yielding explicit analytical one-loop expressions for the propagators, the
coupling and the beta function, from first principles. An excellent agreement
is found with the lattice data. In the proposed screened renormalization
scheme, a monotonic running coupling emerges which saturates in the IR at the
finite IR stable fixed point $g=9.40$ where the beta function crosses the zero.
A simple analytical expression is derived for the leading behavior of the beta
in the IR.

9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
18
The categories of this paper are: econ