A universe born in a metastable false vacuum state needs not die
K. Urbanowski

TL;DR
This paper derives conditions under which a universe originating from a metastable false vacuum can survive indefinitely, suggesting that electroweak vacuum instability may not doom our universe.
Contribution
It introduces inequalities linking decay rate and Hubble parameter that determine universe survival, providing new insights into false vacuum stability.
Findings
High likelihood of universe survival if false vacuum lifetime is much shorter than inflation duration
Decay rate properties of metastable states are analyzed and linked to universe stability
Electroweak vacuum instability does not necessarily lead to universe's death
Abstract
We try to find conditions, the fulfillment of which allows a universe born in a metastable false vacuum state to survive and not to collapse. The conditions found are in the form of inequalities linking the depending on time instantaneous decay rate of the false vacuum state and the Hubble parameter . Properties of the decay rate of a quantum metastable states are discussed and then the possible solutions of the conditions found are analyzed and discussed. Within the model considered it is shown that a universe born in the metastable vacuum state has a very high chance of surviving until very late times if the lifetime, , of the metastable false vacuum state is much shorter, than the duration of the inflation process. Our analysis shows that the instability of the electroweak vacuum does not have to result in the tragic fate of our Universe…
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Taxonomy
TopicsCosmology and Gravitation Theories · Advanced Thermodynamics and Statistical Mechanics · Statistical Mechanics and Entropy
