Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QCD Evolution Equations: Numerical Algorithms from the Laguerre
  Expansion   A complete numerical implementation, in both singlet and non-singlet sectors,
of a very elegant method to solve the QCD Evolution equations, due to Furmanski
and Petronzio, is presented. The algorithm is directly implemented in x-space
by a Laguerre expansion of the parton distributions. All the leading-twist
distributions are evolved: longitudinally polarized, transversely polarized and
unpolarized, to NLO accuracy. The expansion is optimal at finite x, up to
reasonably small x-values ($x\approx 10^{-3}$), below which the convergence of
the expansion slows down. The polarized evolution is smoother, due to the less
singular structure of the anomalous dimensions at small-x. In the region of
fast convergence, which covers most of the usual perturbative applications,
high numerical accuracy is achieved by expanding over a set of approximately 30
polynomials, with a very modest running time.

16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg