Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exact Conformal Scalar Field Cosmologies   New exact solutions of Einstein's gravity coupled to a self-interacting
conformal scalar field are derived in this work. Our approach extends a
solution-generating technique originally introduced by Bekenstein for massless
conformal scalar fields. Solutions are obtained for a
Friedmann-Robertson-Walker geometry both for the cases of zero and non-zero
curvatures, and a variety of interesting features are found. It is shown that
one class of solutions tends asymptotically to a power-law inflationary
behaviour $S(t)\sim t^p$ with $p>1$, while another class exhibits a late time
approach to the $S(t)\sim t$ behaviour of the coasting models. Bouncing models
which avoid an initial singularity are also obtained. A general discussion of
the asymptotic behaviour and of the possibility of occurrence of inflation is
provided.

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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
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The categories of this paper are: math-ph
2
The categories of this paper are: math
1
The categories of this paper are: cs
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The categories of this paper are: eess
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The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: hep-lat