Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "More on Heisenberg's model for high energy nucleon-nucleon
  scattering"   We comment on the treatment of asymptotic black-disk scattering in a recent
paper of Nastase and Sonnenschein, Phys.\ Rev.\ D\ {\bf 92}, 015028 (2015), on
scattering in an updated version of the Heisenberg model which gives $pp$ and
$\bar{p}p$ cross sections which increase at very high energies as $\ln^2s$. We
show that the total cross section they define does not correspond to that
measured in experiments, with the result that their limit for the ratio
$\sigma_{\rm elas}/\sigma_{\rm tot}$ is too small by a factor 2. The correct
ratio for black-disk scattering, $\sigma_{\rm elas}/\sigma_{\rm tot}
\rightarrow 1/2$ for $s\rightarrow\infty$, is strongly supported by experiment.

35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph