Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Population of closed-channel molecules in trapped Fermi gases with broad
  Feshbach resonances   We compute the fraction of closed-channel molecules in trapped atomic Fermi
gases, over the entire range of accessible fields and temperatures. We use a
two-channel model of BCS--Bose-Einstein condensation (BEC) crossover theory at
general temperature $T$, and show that this fraction provides a measure of the
$T$ dependent pairing gap. Our calculations, containing no free parameters, are
in good quantitative agreement with recent low $T$ measurements in $^6$Li. We
present readily testable predictions for the dependencies of the closed-channel
fraction on temperature and Fermi momentum.

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The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an