Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical behavior of the Universe: an entropic force scenario   Entropic force originates in the assumption that there is a horizon for the
universe. This horizon gives rise to additional terms in the equations of
motion. Using dynamical system calculations, our results show that in the
presence of dark energy for certain conditions, the last attractor of this
theory will be dark energy epoch, but in the absence of dark energy, entropic
force energy portion will have the lead role in the late time universe and is
responsible for accelerated expansion of that. Interestingly, assuming both
entropic force terms and dark energy to have their share of energy density of
the universe, we have found that, in certain conditions entropic force
dominated epoch is a stable fixed point while the dark energy epoch is a saddle
point.

10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th