So, do vacuum fluctuations exist?

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Discussion Overview

The discussion revolves around the existence of quantum vacuum fluctuations, exploring the reasons some physicists support their existence and questioning the implications for theories such as multiverse theory. The scope includes conceptual and theoretical aspects, as well as references to quantum electrodynamics (QED).

Discussion Character

  • Debate/contested, Conceptual clarification

Main Points Raised

  • One participant inquires about the reasons many physicists support the existence of quantum vacuum fluctuations, noting that QED does not predict such phenomena and questioning the experimental confirmation of these fluctuations.
  • Another participant provides a link to an article discussing the concept of vacuum fluctuations, suggesting that it may be a myth.
  • A further inquiry is made regarding the impact of vacuum fluctuations on theories like multiverse theory, which relies on the concept of quantum fluctuations.
  • A participant emphasizes that "vacuum fluctuations" is a vague term, indicating that the questions posed may lack a well-defined meaning, which complicates the discussion.
  • The same participant suggests that a more precise question involving quantum field theory should be formulated for a productive discussion.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the existence or implications of vacuum fluctuations, with multiple competing views and a lack of clarity on the terminology used.

Contextual Notes

The discussion highlights limitations related to the vagueness of the term "vacuum fluctuations" and the need for precise definitions when discussing concepts in quantum field theory.

davidge
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I'd like to know the reasons many physicists support the existence of quantum vacuum fluctuations.

It seems that QED doesn't predict such phenomenum, nor any experiment has undoubtedly confirmed it, at least on the grounds of QED.
 
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How does that affects famous theories like multiverse theory (which supposes quantum fluctuations)?
 
@davidge, please read the insights article linked to, and its accompanying discussion thread, which can be found in full here:

https://www.physicsforums.com/threads/the-vacuum-fluctuation-myth-comments.892500/

A key takeway from that article and discussion is that "vacuum fluctuations" is a vague term. That means your questions and statements in this thread do not have a well-defined meaning. So they can't be discussed in the form in which you are stating them.

If you want to discuss a precise question involving quantum field theory, you can start a new thread in which you state a precise question; that means you either should not use the term "vacuum fluctuations" at all, or you should make clear exactly what it refers to in the math of QFT.

In the meantime, this thread is closed.
 
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