Opinions Sought on Hawking Radiation and High Energy Collisions

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Discussion Overview

The discussion revolves around the validity of Hawking radiation and the implications of high-energy collisions, particularly in the context of mini black holes potentially created in particle accelerators like the LHC compared to natural occurrences in the upper atmosphere. Participants seek insights and opinions on these topics, exploring theoretical and observational aspects.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants argue that Hawking radiation has not been proven, highlighting that mini black hole creation has also not been observed.
  • One participant suggests that the theory behind mini black hole creation in the LHC relies on speculative extensions of established theories, questioning the validity of using these extensions to claim that the LHC could produce black holes while denying the associated evaporation process.
  • Another point raised is that high-energy collisions in the upper atmosphere occur with significant momentum, which could allow small black holes to escape Earth, unlike collisions in the LHC that do not occur at zero total momentum.
  • It is mentioned that even if a mini black hole were created at the center of the Earth, it would not cause damage over the Earth's lifetime, according to basic relativistic calculations.
  • A participant references a detailed report that discusses these issues comprehensively.

Areas of Agreement / Disagreement

Participants express differing views on the existence and implications of Hawking radiation and mini black holes, with no consensus reached on the validity of the arguments presented.

Contextual Notes

The discussion involves assumptions about the behavior of black holes, the nature of high-energy collisions, and the theoretical frameworks used to understand these phenomena, which remain unresolved.

Dav333
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Can someone give some opinions on the following?

The 2 main arguments from this site i can tell are: that hawking radiation isn't proven. And that high energy collisions in the upper atmosphere travel at a fast speed & the small black holes can escape from Earth unlike in the lhc.

I watched a video & it said it can take a few years before the small black hole would be noticed. Just wanted some insight thanks.
 
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Dav333 said:
The 2 main arguments from this site i can tell are: that hawking radiation isn't proven.
Yes, Hawking evaporation has not been observed. But mini black-hole creation has not been observed either. The creation of mini black holes in LHC requires the same theory as the one from which black hole evaporation is derived, modified in such a way that Hawking evaporation occurs even faster than what would be required for LHC to be safe. It does not make any sense to use a speculative extension of a theory to claim that LHC will produce black hole and then deny the well established part of the theory which says black hole evaporate.

Dav333 said:
And that high energy collisions in the upper atmosphere travel at a fast speed & the small black holes can escape from Earth unlike in the lhc.
LHC collisions do not occur at zero total momentum, because they do not occur on the whole of the nuclei. The collisions occur on nuclei constituent and the total momentum is not fully balanced. It is very basic relativity to calculate the velocities involved, and compare them to the escape velocity of Earth. Even if you have your mini black hole sitting at the center of the Earth, they would still not cause any damage over the lifetime of the Earth.

Everything has been repeated over and over again. There is a very good detailed report available.
 
thanks for clearing that up. :smile:
 

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