
TL;DR
This paper proposes a novel emergent universe model where the universe starts in a static false vacuum state and transitions to an inflationary phase through quantum tunneling, offering a nonsingular cosmological scenario.
Contribution
It introduces an alternative emergent universe scenario based on quantum tunneling from a false vacuum to a true vacuum, expanding the class of nonsingular inflationary models.
Findings
Universe begins in a static false vacuum state.
Quantum tunneling triggers transition to inflation.
Model provides a nonsingular cosmological evolution.
Abstract
In this work we propose an alternative scheme for an Emergent Universe scenario where the universe is initially in a static state supported by a scalar field located in a false vacuum. The universe begins to evolve when, by quantum tunneling, the scalar field decays into a state of true vacuum. The Emergent Universe models are interesting since they provide specific examples of nonsingular inflationary universes.
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