Are Parallel Universes Possible According to M-Theory?

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Discussion Overview

The discussion revolves around the possibility of parallel universes as proposed by M-theory, exploring theoretical implications, observational challenges, and the speculative nature of such concepts.

Discussion Character

  • Debate/contested, Conceptual clarification, Exploratory

Main Points Raised

  • Some participants express skepticism about the scientific validity of the parallel universe conjecture, suggesting it may lean more towards fiction than fact.
  • Others propose that the concept of parallel universes could be credible within the framework of 11-dimensional M-theory, contingent on the theory's validity.
  • One participant draws an analogy to meteorological models, suggesting that varying dimensions and variables in theoretical cosmology could lead to different universes.
  • A participant questions what specific observations could prove or disprove the existence of parallel universes, labeling the conjecture as potentially bad science.

Areas of Agreement / Disagreement

Participants generally express differing views on the credibility of parallel universes, with some supporting the idea within M-theory and others challenging its scientific basis. The discussion remains unresolved regarding the validity and implications of these concepts.

Contextual Notes

The discussion highlights the speculative nature of M-theory and parallel universes, with no consensus on observational evidence or theoretical acceptance.

Nasher
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Here is a link to a parallel universe... documentary.

BBC Horizan - Parallel Universes (44 min 35 sec)
http://video.google.co.uk/videoplay?docid=4183875433858020781
 
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What observation do you have in mind that would prove, or disprove, the 'parallel universe' conjecture? I think it is bad science.
 
I reckon that idea of parallel universes sounds more like fiction that fact.
Of course, since I am not well up in it, that's just my opinion.

Maybe theoretical cosmologists can vary the number of dimensions and other variables, which will yield different universes and parallel universes depending on their models and variables.

When meteorologists were developing computer programs to simulate the weather, depending on their model and variables, they could generate a wide range of results.
 
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I think the idea of parallel universes has some credibility in the context of 11 dimensional M-theory, that is, if it turns out to be a valid theory of the universe. It seems conceivable that we could inhabit a 4-brane in a higher dimensional bulk in which it is then quite possible that other 4-branes reside with similar or even identical laws of physics. However this is highly speculative at the moment with no experimental proof of the validity of string / M theory.
 

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