Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Three-body problem in Fermi gases with short-range interparticle
  interaction   We discuss 3-body processes in ultracold two-component Fermi gases with
short-range intercomponent interaction characterized by a large and positive
scattering length $a$. It is found that in most cases the probability of 3-body
recombination is a universal function of the mass ratio and $a$, and is
independent of short-range physics. We also calculate the scattering length
corresponding to the atom-dimer interaction.

18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
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The categories of this paper are: eess
10
The categories of this paper are: q-bio
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The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin