TL;DR
This paper proposes an alternative Emergent Universe model where the universe starts in a static state supported by a false vacuum scalar field and evolves through quantum tunneling into a true vacuum, avoiding initial singularities.
Contribution
It introduces a new scheme for the Emergent Universe scenario based on quantum tunneling from a false vacuum to a true vacuum, expanding the class of non-singular inflationary models.
Findings
The universe can originate from a static false vacuum state.
Quantum tunneling triggers the transition to an inflationary phase.
The model provides a non-singular alternative to traditional Big Bang scenarios.
Abstract
We present an alternative scheme for an Emergent Universe scenario, developed previously in , 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 non-singular inflationary universes.
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