What is the Role of Quantum Fluctuations in the Formation of Black Holes?

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Discussion Overview

The discussion centers on the role of quantum fluctuations in the formation of black holes, exploring concepts related to primordial black holes, vacuum energy, and the conditions under which black holes may form. Participants examine theoretical models and the relationship between quantum fluctuations and mass accumulation in the context of black hole formation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants define quantum fluctuations as variations in vacuum energy at a point in space, suggesting they may serve as seeds for black hole formation.
  • Others argue that black holes form from the accumulation of mass, collapsing once a critical amount is reached within a specific region.
  • A participant mentions theories regarding micro-black holes, noting the lack of observational evidence for such entities.
  • There is a suggestion that primordial black holes could arise from density fluctuations during the early universe, particularly after the Big Bang.
  • One participant requests references for specific models of primordial black hole creation from quantum fluctuations.
  • Another participant critiques the reliability of an article claiming that matter is merely quantum fluctuations, arguing that it lacks peer-reviewed references and misrepresents the relationship between mass and quantum fluctuations.
  • Concerns are raised that the fluctuations leading to black hole formation may not be quantum fluctuations but rather ordinary thermal fluctuations.

Areas of Agreement / Disagreement

Participants express differing views on the nature of fluctuations relevant to black hole formation, with some supporting the idea of quantum fluctuations as seeds for black holes while others challenge this notion, emphasizing the role of thermal fluctuations instead. No consensus is reached on the validity of the claims or the interpretations of the articles referenced.

Contextual Notes

Participants note the need for peer-reviewed sources to support claims made about quantum fluctuations and their role in black hole formation. There is also a distinction made between quantum fluctuations and thermal fluctuations, indicating potential confusion in terminology.

wolram
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What is a quantum fluctuation and how do they form a seed for black holes?:
 
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Quantum fluctuations are simply a variation in the vacuum energy of a point in space.

As far as I know, black holes are formed by the accumulation of mass. Once a critical amount is acquired within a specific region of space the mass collapses to form a black hole.

There are theories about the possibility of micro-black holes, but no one has observed/detected any and it is simply a theory.
 
Loren said:
Quantum fluctuations are simply a variation in the vacuum energy of a point in space.

As far as I know, black holes are formed by the accumulation of mass. Once a critical amount is acquired within a specific region of space the mass collapses to form a black hole.

There are theories about the possibility of micro-black holes, but no one has observed/detected any and it is simply a theory.

I thought it was big bang, plasma, quantum fluctuation, black hole, or some form of creation from a QF.
 
wolram said:
I thought it was big bang, plasma, quantum fluctuation, black hole, or some form of creation from a QF.

Can you give a reference that describes a specific model of primordial black hole creation from quantum fluctuations?
 
PeterDonis said:
Can you give a reference that describes a specific model of primordial black hole creation from quantum fluctuations?

No Peter i can not, but from what i can find out in the literature, by my understanding, is that a quantum fluctuation is the seed for producing massive bodies, i am still looking for confirmation.

https://www.newscientist.com/article/dn16095-its-confirmed-matter-is-merely-vacuum-fluctuations/

I have found this article that states that matter is all quantum fluctuations.

And this article on primordial black holes.

https://en.wikipedia.org/wiki/Primordial_black_holeAccording to the Big Bang Model, during the first few moments[clarification needed] after the Big Bang, pressure and temperature were extremely high. Under these conditions, simple fluctuations in the density of matter may have resulted in local regions dense enough to create black holes. Although most regions of high density would be quickly dispersed by the expansion of the universe, a primordial black hole would be stable, persisting to the present.
 
Last edited:
wolram said:
I have found this article that states that matter is all quantum fluctuations.

First, this article gives no references to actual peer-reviewed papers, which is always a red flag. You need to find some actual papers.

Second, the actual models described in the article, as far as I can tell (without having a link to an actual paper), do not say that "matter is all quantum fluctuations". They only say that most of the mass of, say, a proton is due to the energy associated with virtual particle fluctuations, not the mass of the valence quarks that make up the proton. But the valence quarks are certainly there, and they are not just "fluctuations", and the model does not say otherwise. "Matter is merely vacuum fluctuations" is typical New Scientist exaggeration.

wolram said:
Under these conditions, simple fluctuations in the density of matter may have resulted in local regions dense enough to create black holes.

These fluctuations are not quantum fluctuations; they're just ordinary thermal fluctuations, the same as happen in any piece of matter with a finite temperature.
 

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