Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "Theory of Impure Superconductors: Anderson versus Abrikosov
  and Gor'kov"   In a recent article, Kim and Overhauser [Phys. Rev. B 47, 8025 (1993)] have
found fault with the theory of impure superconductors by Abrikosov and Gor'kov
and have proposed an alternative formalism based on Green's functions which are
not derivable from a Dyson equation. Although the corrections to the
Abrikosov-Gor'kov theory found by Kim and Overhauser are correct for
non-retarded interactions, I argue that these corrections do not appear when
one treats realistic retarded interactions within the field-theoretic approach
of Abrikosov and Gor'kov. Direct numerical computation of the impurity-induced
suppression of the superconducting transition temperature Tc for both retarded
and non-retarded interactions illustrates these points. I conclude that
Abrikosov-Gor'kov theory applied to physical electron-electron interactions
yields a tractable formalism which accurately predicts the effects of magnetic
and non-magnetic impurities on Tc.

22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int