Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-polarized fermions with $p$-wave interactions   We study quantum degenerate Fermi gases of ${^6}$Li atoms at high densities
($10^{15}$ cm$^{-3}$) and observe elastic and inelastic $p$-wave collisions far
away from any Feshbach resonance. $P$-wave evaporation reaches temperatures of
$T/T_F=0.42$ partially limited by the slow transfer of energy from high to low
velocities through $p$-wave collisions. Via cross-dimensional thermalization,
the $p$-wave background scattering volume is determined to be $\lvert V_p
\rvert =(39^{+1.3}_{-1.6}a_0)^3$. $P$-wave dipolar relaxation creates a
metastable mixture of the lowest and highest hyperfine states.

36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci