Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Investigating entanglement entropy at small-x in DIS off protons and
  nuclei   In this work we analyse the entanglement entropy in deep inelastic scattering
off protons and nuclei. It is computed based on the formalism where the
partonic state at small-x is maximally entangled with proton being constituted
by large number of microstates occuring with equal probabilities. We consider
analytical expressions for the number of gluons, N_{gluon}, obtained from gluon
saturation models for the dipole-target amplitudes within the QCD color dipole
picture. In particular, the nuclear entanglement entropy per nucleon is
studied. We also study the underlying uncertainties on these calculations and
compare the results to similar investigations in literature.

28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys