Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Soft photon anomaly and gauge/string duality   Motivated by the recent DELPHI report on the anomalous photon production in
e^+e^- annihilation, we exactly calculate the inclusive cross section of soft
photons in the strong coupling limit of N=4 super Yang-Mills. We find that the
energy distribution is that of the Bremsstrahlung, while the angular
distribution is spherical. Our result elucidates a new non-perturbative source
of soft photons not associated with the final state hadronic Bremsstrahlung.

12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom