Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Accelerated Expansion of the Universe in the Model with Non-Uniform
  Pressure   We present the particular case of the Stephani solution for shear-free
perfect fluid with uniform energy density and non-uniform pressure. Such models
appeared as possible alternative to the consideration of the exotic forms of
matter like dark energy that would cause the acceleration of the universe
expansion. These models are characterised by the spatial curvature depending on
time. We analyze the properties of the cosmological model obtained on the basis
of exact solution of the Stephani class and adopt it to the recent
observational data. The spatial geometry of the model is investigated. We show
that despite possible singularities, the model can describe the current stage
of the universe evolution.

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The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
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The categories of this paper are: eess