Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A consistent scalar-tensor cosmology for inflation, dark energy and the
  Hubble parameter   A Friedman cosmology is investigated based on scalar-tensor gravitation with
general metric coupling and scalar potential functions. We show that for a
broad class of such functions, the scalar field can be dynamically trapped
using a recently suggested mechanism. The trapped scalar can drive inflation
and accelerated cosmic expansion, compatible with standard requirements. The
inflationary phase admits a natural exit with a value of the Hubble parameter
dictated by the duration of inflation in a parameter independent manner. For
inflationary duration consistent with the GUT description, the resulting Hubble
parameter is found to be consistent with its observed value.

13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph