Vacuum decay likelihood and consequences

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SUMMARY

Vacuum decay is a theoretical concept in physics that suggests a phase transition in the vacuum state of the universe, potentially leading to catastrophic consequences. While some scientists consider it a serious topic, many view it as speculative and primarily sensationalized in popular media. The most extreme consequence of vacuum decay is the complete destruction of the universe, which raises questions about the fate of all matter and energy. In contrast, the imminent collision of the Andromeda galaxy with the Milky Way poses a more immediate concern, potentially resulting in significant radiation from the merging black holes.

PREREQUISITES
  • Understanding of quantum field theory
  • Familiarity with cosmology and the structure of the universe
  • Knowledge of black hole physics
  • Awareness of galaxy dynamics and collisions
NEXT STEPS
  • Research the implications of vacuum decay in quantum field theory
  • Study the potential consequences of galaxy mergers on cosmic radiation
  • Explore the concept of quasar formation and its effects on surrounding environments
  • Investigate current scientific consensus on the likelihood of vacuum decay events
USEFUL FOR

Physicists, cosmologists, science communicators, and anyone interested in theoretical physics and cosmic events.

KleinMoretti
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TL;DR
what is the likelihood of a vacuum decay ever happening and what would be the consequences.
what is the likelihood of a vacuum decay happening, like is it something that is really considered and taken seriously by scientists or is it just wild speculation that is not really taken seriously but makes for good headlines?

Also if vacuum decay does happen what exactly would be the consequences, like I have read that the most extreme case is the destruction of the universe but what exactly does that mean, is everything in the universe actually destroyed including the energy of the universe?
 
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I'd vote it "wild speculation" at best. But it makes great click-bait so you'll see it often on pop science websites and news feeds.

Now if you want to worry about something more pressing, Andromeda will collide with the Milky Way and probably the central black holes will merge. I afraid that the resulting radiation as the merged galaxy becomes a quasar will wipe out all life. Even if we have interstellar travel by then there's nowhere in the galaxy to hide. 😅
 

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