Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmic inventory of energy densities: issues and concerns   The dynamics of our universe is characterised by the density parameters for
cosmological constant ($\Omega_V$), nonbaryonic darkmatter($\Omega_{\rm
wimp}$), radiation ($\Omega_R$) and baryons ($\Omega_B$). To these parameters
-- which describe the smooth background universe -- one needs to add at least
another dimensionless number ($\sim 10^{-5}$) characterising the strength of
primordial fluctuations in the gravitational potential, in order to ensure
formation of structures by gravitational instability.
  I discuss several issues related to the description of the universe in terms
of these numbers and argue that we do not yet have a fundamental understanding
of these issues.

12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
2
The categories of this paper are: math