Hawking Radiation as a Mechanism for Inflation

TL;DR

This paper proposes that Hawking radiation in FRW space-time can generate negative pressure, driving early Universe inflation, which naturally ends as the radiation temperature decreases, transitioning to standard expansion.

Contribution

It introduces a novel inflation mechanism based on Hawking radiation in FRW space-time, linking quantum effects to cosmological expansion.

Findings

Hawking radiation induces negative pressure in FRW space-time.

This mechanism can cause exponential inflation in the early Universe.

The inflationary phase naturally ends as Hawking temperature decreases.

Abstract

The Friedman-Robertson-Walker (FRW) space-time exhibits particle creation similar to Hawking radiation of a black hole. In this essay we show that this FRW Hawking radiation leads to an effective negative pressure fluid which can drive an inflationary period of exponential expansion in the early Universe. Since the Hawking temperature of the FRW space-time decreases as the Universe expands this mechanism naturally turns off and the inflationary stage transitions to a power law expansion associated with an ordinary radiation dominated Universe.