Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental realities refuting existence of p=0 condensate in a system
  of interacting bosons : I. Electron bubble   Physical reality of the existence of electron bubble in liquid $^4He$ (or
$^3He$) renders a {\it clear experimental evidence} for a quantum particle (in
an interacting environment as seen by electron in liquid helium) to occupy
exclusively a space of size $\lambda/2$ that, obviously, depends on its
energy/momentum. This unequivocally proves that {\it no particle} in a system
of interacting bosons such as liquid $^4He$ has momentum $p=0$; in stead, {\it
all particles} in the ground state of such a system are in the single quantum
state of energy $\varepsilon_o = h^2/8md^2$ or momentum $p = h/2d$.

17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph