Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transient cosmic acceleration from interacting fluids   Recent investigations seem to favor a cosmological dynamics according to
which the accelerated expansion of the Universe may have already peaked and is
now slowing down again \cite{sastaro}. As a consequence, the cosmic
acceleration may be a transient phenomenon. We investigate a toy model that
reproduces such a background behavior as the result of a time-dependent
coupling in the dark sector which implies a cancelation of the "bare"
cosmological constant. With the help of a statistical analysis of Supernova
Type Ia (SNIa) data we demonstrate that for a certain parameter combination a
transient accelerating phase emerges as a pure interaction effect.

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The categories of this paper are: nlin
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The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg