Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proof of universality in one-dimensional few-body systems including
  anisotropic interactions   We provide an analytical proof of universality for bound states in
one-dimensional systems of two and three particles, valid for short-range
interactions with negative or vanishing integral over space. The proof is
performed in the limit of weak pair-interactions and covers both binding
energies and wave functions. Moreover, in this limit the results are formally
shown to converge to the respective ones found in the case of the zero-range
contact interaction.

2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int