Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultraperipheral vs ordinary nuclear interactions   It is argued that the cross sections of ultraperipheral interactions of heavy
nuclei can become comparable in value to those of their ordinary hadronic
interactions at high energies. Simple estimates of corresponding "preasymptotic
energy thresholds" are provided.The~method of equivalent photons is compared
with the perturbative approach. The~situation at NICA/FAIR energies is
discussed.

35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys