Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Introduction: GDH and related topics   The formulation of the Gerasimov-Drell-Hearn sum rule is revisited, showing
its connection with other sum rules occurring in electron scattering and
discussing the problem of its saturation, both from the theoretical and
experimental point of v iew. The generalisation to other nuclear targets is
also reported.

8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph