Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Inflation, braneworlds and quintessence   Inflationary cosmology is developed in the second Randall-Sundrum braneworld
scenario, where the accelerated expansion arises through potentials that are
too steep to drive inflation in conventional cosmology. A relationship between
the scalar and tensor perturbation spectra is derived that is independent of
both the inflaton potential and the brane tension. It is found that a single
field with an inverse power law potential can act as both the inflaton and the
quintessence field for suitable values of the brane tension.

37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
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
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat