Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Quasiclassical Approximation in the Theory of the Landau-Pomeranchuk
  Effect   Using the improved value of the screening angular parameter in the
quasiclassical approximation of the Moliere multiple scattering theory we show
that the best agreement between the Migdal theory of the LPM-effect and
experiment is achieved if the multiple scattering of electrons by target atoms
is described using the quasiclassical approximation instead of the
traditionally used Born one.

16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph