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.
