Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Brane assisted quintessential inflation with transient acceleration   A simple model of quintessential inflation with the modified exponential
potential exp(-\alpha \phi) [A + (\phi-\phi_0)^2] is analyzed in the braneworld
context. Considering reheating via instant preheating, it is shown that the
evolution of the scalar field \phi from inflation to the present epoch is
consistent with the observational constraints in a wide region of the parameter
space. The model exhibits transient acceleration at late times for 0.96 < A
\alpha^2 < 1.26 and 271 < \phi_0 \alpha < 273, while permanent acceleration is
obtained for 2.3 10^{-8} < A \alpha^2 < 0.98 and 255 < \phi_0 \alpha < 273. The
steep parameter \alpha is constrained to be in the range 5.3 < \alpha < 10.8.

13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph