Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-relativistic Matter and Quantized Radiation   This is a didactic review of spectral and dynamical properties of atoms and
molecules at energies below the ionization threshold, the focus being on recent
work in which the author was involved. As far as possible, the results are
described using a simple model with \emph{one} electron only, and with
\emph{scalar} bosons. The main ideas are explained but no complete proofs are
given. The full-fledged standard model of non-relativistic QED and various of
its aspects are described in the appendix.

31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an