Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Boson-Fermion pairing in a Boson-Fermion environment   Propagation of a Boson-Fermion (B-F) pair in a B-F environment is considered.
The possibility of formation of stable strongly correlated B-F pairs, embedded
in the continuum, is pointed out. The new Fermi gas of correlated B-F pairs
shows a strongly modified Fermi surface. The interaction between like particles
is neglected in this exploratory study. Various physical situations where our
new pairing mechanism could be of importance are invoked.

6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph