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Entropy 2012, 14(7), 1296-1305; doi:10.3390/e14071296

A Model of Nonsingular Universe

1
The National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
2
Kavli Institute for Theoretical Physics China, CAS, Beijing 100190, China
Received: 19 April 2012 / Revised: 4 June 2012 / Accepted: 13 June 2012 / Published: 23 July 2012
(This article belongs to the Special Issue Modified Gravity: From Black Holes Entropy to Current Cosmology)
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Abstract

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-dependent 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.
Keywords: Hawking temperature; scalar field; nonsingular universe Hawking temperature; scalar field; nonsingular universe
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Gao, C. A Model of Nonsingular Universe. Entropy 2012, 14, 1296-1305.

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