Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parton shower evolution with subleading color   Parton shower Monte Carlo event generators in which the shower evolves from
hard splittings to soft splittings generally use the leading color
approximation, which is the leading term in an expansion in powers of
$1/N_c^2$, where $N_c = 3$ is the number of colors. We introduce a more general
approximation, the LC+ approximation, that includes some of the color
suppressed contributions. There is a cost: each generated event comes with a
weight. There is a benefit: at each splitting the leading soft$\times$collinear
singularity and the leading collinear singularity are treated exactly with
respect to color. In addition, an LC+ shower can start from a state of the
color density matrix in which the bra state color and the ket state color do
not match.

2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas