Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The universal potential fluctuations   It is assumed the existence of the universal potential fluctuations valid for
all scales in the universe which follow the fractal law $\delta_U=(\Delta
r/r)^2$. The value of the universal potential fluctuations is determined from
the data on anisotropy of the cosmic microwave background on degree scales. It
is suggested to test the existence of the universal potential fluctuations in
the laboratory experiment.

18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc