Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quintessence with Hybrid Potential   I present the numerical solution of equations of the evolution of a universe
containing background fluids (radiation, dark matter and baryonic matter), plus
a scalar matter field with a hybrid potential that is a combination of
exponential potential and power-law potential. The plot of the evolution of
density parameters is compatible with our universe; and today's values of
density parameters of dark energy, dark matter, baryonic matter, and Hubble
parameter, and the age and size of our universe, found from this model, are
very close to (and some times the same as) measured values.

23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ