Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Path Integral Treatment of Fluctuations in the BCS-BEC Crossover in
  Superfluid Fermi Gases   By using a Path Integral formalism, we study the fluctuating fields in the
order parameter for a 3D uniform Fermi gas at T<Tc. The BCS-BEC crossover
condition is included into the analysis in the framework of the usual s-wave
scattering approximation. The general expressions for the temperature
dependence of the partition function and the quadratic average in the
fluctuations fields are explicitly established in terms of the BCS-Gor'kov
correlation propagators.

37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph