Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on: Superfluid density and specific heat within a
  self-consistent scheme for a two-band superconductor   Kogan et al. [Phys. Rev. B 80, 014507 (2009)] present a two-band model to
investigate its effect on superconducting properties as, e.g., the superfluid
density, the specific heat, the dependence of the superconducting transition
temperature Tc on the model parameters. Due to a variety of simplifications and
unphysical consequences of those, erroneous results and misleading conclusions
are obtained.

26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat