Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A model of nonsingular universe   In the background of Friedmann-Robertson-Walker Universe, there exists
Hawking radiation which comes from the cosmic apparent horizon due to quantum
effect. Although the Hawking radiation on the late time evolution of the
universe could be safely neglected, it plays an important role in the very
early stage of the universe. In view of this point, we identify the temperature
in the scalar field potential with the Hawking temperature of cosmic apparent
horizon. Then we find a nonsingular universe sourced by the
temperature-dependant scalar field. We find that the universe could be created
from a de Sitter phase which has the Planck energy density. Thus the Big-Bang
singularity is avoided.

1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph