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arXiv · 1207.0230

Inflation with a graceful exit and entrance driven by Hawking radiation

Sujoy Kumar Modak·Douglas Singleton
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Abstract

We present a model for cosmological inflation which has a natural "turn on" and a natural "turn off" mechanism. In our model inflation is driven by the Hawking-like radiation that occurs in Friedman-Robertson-Walker (FRW) space-time. This Hawking-like radiation results in an effective negative pressure "fluid" which leads to a rapid period of expansion in the very early Universe. As the Universe expands the FRW Hawking temperature decreases and the inflationary expansion turns off and makes a natural transition to the power law expansion of a radiation dominated universe. The "turn on" mechanism is more speculative, but is based on the common hypothesis that in a quantum theory of gravity at very high temperatures/high densities Hawking radiation will stop. Applying this speculation to the very early Universe implies that the Hawking-like radiation of the FRW space-time will be turned off and therefore the inflation driven by this radiation will turn off.

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Sujoy Kumar Modak, Douglas Singleton. 2012-07-01. Inflation with a graceful exit and entrance driven by Hawking radiation. https://doi.org/10.1103/physrevd.86.123515

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