Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Lattice Study of the Glue in the Nucleon   By introducing an additional operator into the action and using the
Feynman-Hellmann theorem we describe a method to determine both the quark line
connected and disconnected terms of matrix elements. As an illustration of the
method we calculate the gluon contribution (chromo-electric and chromo-magnetic
components) to the nucleon mass.

26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
18
The categories of this paper are: econ
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin