Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Benchmarking density functional approximations for diamagnetic and
  paramagnetic molecules in nonuniform magnetic fields   In this paper, correlated studies on a test set of 36 small molecules are
carried out with both wavefunction (HF, MP2, CCSD) and density functional (LDA,
KT3, cTPSS, cM06-L) methods. The effect of correlation on exotic response
properties such as molecular electronic anapole susceptibilities is studied and
the performance of the various density functional approximations are
benchmarked against CCSD and/or MP2. Atoms and molecules are traditionally
classified into `diamagnetic' and `paramagnetic' based on their isotropic
response to uniform magnetic fields. However, in this paper we propose a more
fine-grained classification of molecular systems on the basis of their response
to generally non-uniform magnetic fields. The relation of orientation to
different qualitative responses is also considered.

28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int