Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photon Hall Scattering from Alkaline-earth-like atoms and Alkali-like
  ions   We investigate the possibility of observing a magneto-transverse scattering
of photons from alkaline-earth-like atoms as well as alkali-like ions and
provide orders of magnitude. The transverse magneto-scattering is physically
induced by the interference between two possible quantum transitions of an
outer electron in a S-state, one dispersive electric-dipole transition to a
P-orbital state and a second resonant electric-quadrupole transition to a
P-orbital state. In contrast with previous mechanisms proposed for such an
atomic photonic Hall effect, no real photons are scattered by the
electric-dipole allowed transition, which increases the ratio of Hall current
to background photons significantly. The main experimental challenge is to
overcome the small detection threshold, with only 10^{-5} photons scattered per
atom per second.

1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol