Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cooling gases with Levy flights: using the generalized central limit
  theorem in physics   In the last ten years, the generalized central limit theorem established by
Paul Levy in the thirties has been found more and more relevant in physics.
Physicists call 'Levy flights' random walks for which the probability density
of the jump lenghts $x$ decays as $1/x^{1+\alpha}$ with $\alpha<2$ for large
$x$. We give here a glimpse of Levy flights in physics through two examples,
without going into technical details. We first introduce a simple toy model,
the Arrhenius cascade. We then present an important physical process, subrecoil
laser cooling of atomic gases, in which Levy flights play an essential role.

31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys