Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estimation of correlation energy for excited-states of atoms   The correlation energies of various atoms in their excited-states are
estimated by modelling the Coulomb hole following the previous work by
Chakravorty and Clementi. The parameter in the model is fixed by making the
corresponding Coulomb hole to satisfy the exact constraint of charge
neutrality.

29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph