Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Symmetry breaking and the onset of cosmic acceleration in scalar field
  models   We propose a new scenario for the onset of positive acceleration of our
Universe based on symmetry breaking in coupled dark energy scalar field model.
In a symmetry breaking process where the scalar field rolls down its own
potential, the potential reduction is not in favor of acceleration. In our
model, when dark matter density becomes less than a critical value, the shape
of the effective potential is changed and, the quintessence field climbs up
along {\it{its own potential}} while rolls down the effective potential. We
show that this procedure may establish the positivity of the potential required
for the Universe to accelerate. In addition, we show that by choosing an
appropriate interaction between dark sectors there is the possibility that the
scalar field resides in a new vacuum giving rise to a positive cosmological
constant which is responsible for a permanent late time acceleration.

12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol