False vacuum
In quantum field theory, a false vacuum is a hypothetical vacuum state that is locally stable but does not occupy the most stable possible ground state. In this condition it is called metastable. It may last for a very long time in this state, but could eventually decay to the more stable one, an event known as false vacuum decay. The most common suggestion of how such a decay might happen in our universe is called bubble nucleation—if a small region of the universe by chance reached a more stable vacuum, this "bubble" (also called "bounce") would spread.
False vacuum - Wikipedia Jump to content From Wikipedia, the free encyclopedia Hypothetical vacuum, less stable than true vacuum Part of a series on Physical cosmology Big Bang   · Universe Age of the universe Chronology of the universe Early universe Inflation   · Nucleosynthesis Backgrounds Gravitational wave (GWB) Microwave (CMB)   · Neutrino (CNB) Expansion  · Future Hubble's law   · Redshift Expansion of the universe FLRW metric   · Friedmann equations Lambda-CDM model Future of an expanding universe Ultimate fate of the universe Components  · Structure
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