Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: String breaking on a lattice   String breaking is a non-perturbative long-distance feature of QCD that is
involved in for example meson decays. A mixing analysis of lattice operators at
zero temperature gives the level splitting and mixing energy between the broken
and unbroken string states.

26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an