Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Collision of one dimensional (1D) spin polarized Fermi gases in an
  optical lattice   In this work we analyze the dynamical behavior of the collision between two
clouds of fermionic atoms with opposite spin polarization. By means of the
time-evolving block decimation (TEBD) numerical method, we simulate the
collision of two one-dimensional clouds in a lattice. There is a symmetry in
the collision behaviour between the attractive and repulsive interactions. We
analyze the pair formation dynamics in the collision region, providing a
quantitative analysis of the pair formation mechanism in terms of a simple
two-site model.

24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin