Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fundamental scalar fields and the dark side of the universe   Starting with geometrical premises, we infer the existence of fundamental
cosmological scalar fields. We then consider physically relevant situations in
which spacetime metric is induced by one or, in general, by two scalar fields,
in accord with the Papapetrou algorithm. The first of these fields, identified
with dark energy, has exceedingly small but finite (subquantum) Hubble mass
scale (~ 10^-33 eV), and might be represented as a neutral superposition of
quasi-static electric fields. The second field is identified with dark matter
as an effectively scalar conglomerate composed of primordial neutrinos and
antineutrinos in a special tachyonic state.

21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con