Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Long-range interactions of lithium atoms   The long-range interactions of two atoms, of an atom and a dielectric wall,
of an atom and a perfectly conducting wall, and of an atom between two
perfectly conducting walls are calculated, including the effects of
retardation, for Li using dynamic polarizabilities determined from highly
correlated, variationally determined wave functions.

19
The categories of this paper are: eess
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con