Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Equation of state of a polarized Fermi gas in the Bose-Einstein
  Condensate limit   We present a theoretical study of the BEC-BCS crossover in the
Bose-Einstein-Condensate regime (BEC), in the case of an unequal number of
fermions of two species. We take full account of the composite nature of the
dimers made of fermions. In the limit of low densities, we calculate the ground
state energy of the system, or equivalentely the chemical potentials of each
species as well as the one-particle gap and the energy of an "impurity"
immersed in a Fermi sea. For the chemical potentials we go up to order
(density)^{4/3}.The results found involve the exact atom-dimer a_{AD} and
dimer-dimer a_{DD} scattering lengths and therefore include the 3 and 4-body
problems in the manybody problem. We briefly comment on the importance of the
different mean-field corrections for recent experiments.

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The categories of this paper are: hep-ph
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga