Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analytic behavior of the QED polarizability function at finite
  temperature   We revisit the analytical properties of the static quasi-photon
polarizability function for an electron gas at finite temperature, in
connection with the existence of Friedel oscillations in the potential created
by an impurity. In contrast with the zero temperature case, where the
polarizability is an analytical function, except for the two branch cuts which
are responsible for Friedel oscillations, at finite temperature the
corresponding function is not analytical, in spite of becoming continuous
everywhere on the complex plane. This effect produces, as a result, the
survival of the oscillatory behavior of the potential. We calculate the
potential at large distances, and relate the calculation to the non-analytical
properties of the polarizability.

26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex