Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hyperspherical Treatment of Strongly-Interacting Few-Fermion Systems in
  One Dimension   We examine a one-dimensional two-component fermionic system in a trap,
assuming that all particles have the same mass and interact through a strong
repulsive zero-range force. First we show how a simple system of three strongly
interacting particles in a harmonic trap can be treated using the
hyperspherical formalism. Next we discuss the behavior of the energy for the
N-body system.

8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol