A new inflationary Universe scenario with inhomogeneous quantum vacuum

TL;DR

This paper proposes a novel inflationary universe model driven by inhomogeneous quantum vacuum fluctuations, explaining ongoing expansion and faster tunneling through potential barriers, differing from previous homogeneous models.

Contribution

It introduces a new inflationary scenario based on inhomogeneous quantum vacuum fluctuations and a modified Green's function, providing insights into universe expansion and tunneling dynamics.

Findings

Vacuum fluctuations cause significant inhomogeneity affecting cosmological evolution.

The new model explains continuous universe expansion without slowing down.

Inhomogeneity accelerates tunneling through potential barriers.

Abstract

We investigate the quantum vacuum and find the fluctuations can lead to the inhomogeneous quantum vacuum. We find that the vacuum fluctuations can significantly influence the cosmological inhomogeneity, which is different from what previously expected. By introducing the modified Green's function, we reach a new inflationary scenario which can explain why the Universe is still expanding without slowing down. We also calculate the tunneling amplitude of the Universe based on the inhomogeneous vacuum. We find that the inhomogeneity can lead to the penetration of the universe over the potential barrier faster than previously thought.