Big Bang Singularity: What Prevents Universe from Becoming Black Hole?

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SUMMARY

The discussion centers on the question of why the universe did not collapse into a black hole during the Big Bang, with participants referencing concepts from quantum cosmology and classical general relativity (GR). Key points include the assertion that classical GR fails at the moment of expansion, and that quantum cosmology suggests a "bounce" rather than a singularity. The Inflationary Model is mentioned as a framework that addresses these issues, while the rapid expansion of the universe post-Big Bang is highlighted as a factor preventing black hole formation. The conversation emphasizes the need to consult current research and peer-reviewed literature for a deeper understanding of these complex topics.

PREREQUISITES
  • Understanding of classical general relativity (GR) and its limitations
  • Familiarity with quantum cosmology and its implications for the Big Bang
  • Knowledge of the Inflationary Model in cosmology
  • Awareness of the concept of a "bounce" in quantum cosmological models
NEXT STEPS
  • Research the latest papers on quantum cosmology published since 2005
  • Study the Inflationary Model and its role in modern cosmology
  • Explore the mathematical models predicting behavior at the singularity in black holes
  • Investigate the implications of the Bousso covariant entropy bound in Loop Quantum Cosmology
USEFUL FOR

Astronomers, physicists, and students of cosmology seeking to understand the complexities of the Big Bang, black hole formation, and the current research landscape in quantum cosmology.

  • #31
Alex48674 said:
I thought that mechanism was a supercooled higg's field causing a negative pressure. Is this wrong, or do you mean what caused it to supercool?

I think that is just one of many proposed mechanisms. There is a long way to go before we have a coherent theory of inflation with all the details worked out.
 
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  • #32
Wallace said:
I think that is just one of many proposed mechanisms. There is a long way to go before we have a coherent theory of inflation with all the details worked out.

Ohh alright, so what are some of the other bigs ones to look into? And how mainstream is the one I mentioned in comparison?
 
  • #33
Not sure. Too be honest I haven't heard of that idea. Where did you hear it from?

There are too many theories of inflation, or some process that isn't inflation but solves the same problems, to list. Some extend the standard model of particle physics (which the Higgs idea you refer to would be an example of) while some suggest new mechanisms entirely. This is a very dynamic field, not completely unconstrained by data, but none the less with plenty of freedom for new ideas that have the same effects as other ideas but with a vastly different cause.
 

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