Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gap equation in finite-temperature three-dimensional QED beyond the
  bare-vertex approximation   Dynamical mass generation in a three-dimensional version of
finite-temperature QED is studied with the help of Schwinger-Dyson equations in
the real-time formalism. We go beyond the bare-vertex approximation and include
wave-function renormalization effects. This introduces a system of two integral
equations which are solved numerically. In order to increase the reliability of
the results, fermion and photon self-energies varying independently with energy
and momentum are used. The method applied enables a detailed study of the
behaviour of the theory with increasing temperature and number of fermion
flavours.

16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th