Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of Cosmic Acceleration and Determining the Fate of the
  Universe   Current observations of Type Ia supernovae provide evidence for cosmic
acceleration out to a redshift of $z \lsim 1$, leading to the possibility that
the universe is entering an inflationary epoch. However, inflation can take
place only if vacuum-energy (or other sufficiently slowly redshifting source of
energy density) dominates the energy density of a region of physical radius
1/H. We argue that for the best-fit values of $\Omega_\Lambda$ and $\Omega_m$
inferred from the supernovae data, one must confirm cosmic acceleration out to
at least $z \simeq 1.8$ to infer that the universe is inflating.

0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol