Published 2023 | Version v1
Journal article

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

  • 1. Institute of Physics, University of Zielona Góra, ul. Prof. Z. Szafrana 4a, 65-516, Zielona Gora (Poland)

Description

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 t instantaneous decay rate Γ(t) of the false vacuum state and the Hubble parameter H(t). 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, τ0F, 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 leading to its death.

Availability note (English)

Available from: http://dx.doi.org/10.1140/epjc/s10052-023-11197-4

Additional details

Publishing Information

Journal Title
European Physical Journal. C, Particles and Fields (Online)
Journal Volume
83
Journal Issue
1
Journal Page Range
vp.
ISSN
1434-6052
CODEN
EPCFFB

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
54025875
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
DECAY; METASTABLE STATES; UNIVERSE; VACUUM STATES
Descriptors DEC
ENERGY LEVELS; EXCITED STATES

Optional Information

Notes
AID: 55