Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Light-induced polarization effects in atoms with partially resolved
  hyperfine structure and applications to absorption, fluorescence, and
  nonlinear magneto-optical rotation   The creation and detection of atomic polarization is examined theoretically,
through the study of basic optical-pumping mechanisms and absorption and
fluorescence measurements, and the dependence of these processes on the size of
ground- and excited-state hyperfine splittings is determined. The consequences
of this dependence are studied in more detail for the case of nonlinear
magneto-optical rotation in the Faraday geometry (an effect requiring the
creation and detection of rank-two polarization in the ground state) with
alkali atoms. Analytic formulas for the optical rotation signal under various
experimental conditions are presented.

33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph