Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ground state of a homogeneous Bose gas of hard spheres   The ground state of a homogeneous Bose gas of hard spheres is treated in
self-consistent mean-field theory. It is shown that this approach provides an
accurate description of the ground state of a Bose-Einstein condensed gas for
arbitrarily strong interactions. The results are in good agreement with Monte
Carlo numerical calculations. Since all other mean-field approximations are
valid only for very small gas parameters, the present self-consistent theory is
a unique mean-field approach allowing for an accurate description of Bose
systems at arbitrary values of the gas parameter.

33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph