Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A unity of QCD evolution dynamics at small $x$ region   The DGLAP, BFKL, modified DGLAP and modified BFKL equations are constructed
in a unified partonic framework. The antishadowing effect in the recombination
process is emphasized, which leads to two different small $x$ behaviors of
gluon distribution. In the meantime, the BFKL equation and modified DGLAP
equation are viewed as the corrections of the initial gluon correlations to the
evolution dynamics at twist-2 and twist-4, respectively. A partonic explanation
of Regge theory for the BFKL dynamics and the relation of the BFKL dynamics
with the helicity configuration of the initial gluons are presented.

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The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
18
The categories of this paper are: econ
1
The categories of this paper are: cs
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The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys