What are the 26 dimensions in the M theory?

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SUMMARY

The discussion centers on the dimensions of M-theory and bosonic string theory, clarifying that while bosonic string theory posits 26 dimensions, the introduction of fermions via supersymmetry reduces this to 10 critical dimensions. M-theory, as established by Edward Witten, expands this to 11 dimensions, consisting of 10 spatial dimensions and 1 time dimension. The additional 7 spatial dimensions are essential for the vibration of strings, which is necessary to account for all known particles in the Standard Model. The dimensions discussed are primarily internal degrees of freedom and are not specifically named.

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  • Understanding of string theory fundamentals
  • Familiarity with concepts of dimensions in theoretical physics
  • Knowledge of supersymmetry and its implications
  • Basic grasp of the Standard Model of particle physics
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  • Research the implications of M-theory on unifying quantum mechanics and general relativity
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  • Explore the concept of dualities in string theories
  • Investigate the contributions of Edward Witten to string theory
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The discussion is beneficial for theoretical physicists, students of advanced physics, and anyone interested in the complexities of string theory and its dimensional frameworks.

qsefthuko66
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What are all the 26 dimensions in the M theory, named?
 
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The 26 dimensions you mention are specific to so-called bosonic string theory. Adding fermions via supersymmetry cuts this number, also called the critical dimension (because the theory seems to be only well-defined in this number of dimensions!) down to 10. However, this gives you several different theories, which turn out to be connected via dualities.

The covering theory is called M-theory, and in this theory an extra dimension opens up.

I'm not sure what you mean by "naming dimensions". I can name them whatever I want: (t,x,y,z,a,b,c,d,e,f,g,...) :)
 
qsefthuko66 said:
What are all the 26 dimensions in the M theory, named?

I thought that M-theory had 11 dimensions? A string theorist named Edward Witten figured that out, last I heard.

In string theory, particles are oscillating vibrating 1d lines, as opposed to 0d point particles. The reason they are preferred, is because they eliminate infinity solns, otherwise known as mathematical anamolies. It's also believed they may help in unifying quantum mechanics with general relativity. The 11 dimensions consist of 10 spatial dimensions, and 1 time dimension, so 7 extra inperceptable spatial dimensions.

If I recall correctly, these 7 extra dimensions are necessary to provide "the required space" for the strings to vibrate, if they are to vibrate in such a way as to support all the known particles of the Standard Model. Ed Witten figured out that the other competing string theories (which assumed less than 11 dimensions) were all the result of looking at the 11 dimensions from limited and differing perspective.

I'm not sure what the dimensions are named either.

GrayGhost
 
qsefthuko66 said:
What are all the 26 dimensions in the M theory, named?

They are all internal degrees of freedom
 
qsefthuko66 said:
What are all the 26 dimensions in the M theory, named?

They aren't named anything.
 
dimension10 said:
They are all internal degrees of freedom

dimension10 said:
They aren't named anything.
They are dimensions of spacetime, so...not internal. I agree about the naming.
 

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