Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-atomic potential and distortion of excitation spectrum of liquid
  He-4 by admixture of He-3   The new interatomic potential g(r), providing the tunnelling of atoms, is
suggested for calculating HFB phonon-roton spectrum E(p) of liquid He-4. The
tunnelling enables the calculations to reproduce the experimental dependence of
shifts E(p) on pressure P induced by He-3 admixture in the constant total
density and volume.

19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio