Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Remarks on a solvable cosmological model   We present an exact analytical solution of the Einstein equations with
cosmological constant in a spatially flat Robertson-Walker metric. This is
interpreted as an isotropic Lemaitre-type version of the cosmological Friedmann
model. Implications in the recent discovered cosmic acceleration of the
universe and in the theory of an inflationary model of the universe are in
view. Some properties of this solution are pointed out as a result of numerical
investigations of the model.

8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th