Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Accuracy of density functionals for molecular electronics: the Anderson
  junction   The exact ground-state exchange-correlation functional of Kohn-Sham density
functional theory yields the exact transmission through an Anderson junction at
zero bias and temperature. The exact impurity charge susceptibility is used to
construct the exact exchange-correlation potential. We analyze the successes
and limitations of various types of approximations, including smooth and
discontinuous functionals of the occupation, as well as symmetry-broken
approaches.

5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess