Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: BCS to BEC Quantum Phase Transition in Spin Polarized Fermionic Gases   We discuss the possibility of a quantum phase transition in ultracold spin
polarized fermionic gases which exhibit a p-wave Feshbach resonace. We show
that when fermionic atoms form a condensate that can be externally tuned
between the BCS and BEC limits, the zero temperature compressibility and the
spin susceptibility of the fermionic gas are non-analytic functions of the
two-body bound state energy. This non-analyticity is due to a massive
rearrangement of the momentum distribution in the ground state of the system.
Furthermore, we show that the low temperature superfluid density is also
non-analytic, and exibits a dramatic change in behavior when the critical value
of the bound state energy is crossed.

33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga