A universe born in a metastable false vacuum state needs not die
Creators
- 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, τ, 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/s10052-023-11197-4Additional details
Identifiers
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