Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Emergent universe in spatially flat cosmological model   The scenario of an emergent universe provides a promising resolution to the
big bang singularity in universes with positive or negative spatial curvature.
It however remains unclear whether the scenario can be successfully implemented
in a spatially flat universe which seems to be favored by present cosmological
observations. In this paper, we study the stability of Einstein static state
solutions in a spatially flat Shtanov-Sahni braneworld scenario. With a
negative dark radiation term included and assuming a scalar field as the only
matter energy component, we find that the universe can stay at an Einstein
static state past eternally and then evolve to an inflation phase naturally as
the scalar field climbs up its potential slowly. In addition, we also propose a
concrete potential of the scalar field that realizes this scenario.

14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an