Could it just be 4 different dimensions not 11?

[clm321]

what problems are solved by the theory of 11 different dimensions instead of just 1-4 proposed in the m theory and string theory

 

[tom.stoer]

I am not sure if I understand you correctly.

As far as I can see the ten dimensions of string theory are not there to solve a problem in the real world, but they are required for consistency of the theory itself. In any other dimension the theory would contain negative norm states / tachyons which are usually an indication that something went wrong in the quantization.

I am not sure if this carries over to M-theory.

 

[clm321]

ok well well why is it that there are 10 dimentions shown in the string theory instead of just 1-4 . and what i ment was what questions are answered about the univers/possible universes by the 7 different theorys?

 

[tom.stoer]

why is it that there are 10 dimentions shown in the string theory instead of just 1-4.

As I said, superstring theory is inconsistent in D<>10.

what questions are answered about the univers/possible universes by the 7 different theorys?

Which 7 theories? 5 string theories, supergravity plus m-theory? This is a rather global question ...

 

[clm321]

well I am still studying these theories iv only found and interest in this just recently but isn't it the m theory that has 11 different dimentions or maybe superstring theory I am not exacly sure

 

[tom.stoer]

Well, I am still studying these theories ... I've only found ... and interest in this just recently ... but isn't it M-theory that has 11 [different] dimensions, or maybe superstring theory. I am not exacly sure.

Please!

 

[clm321]

I'm sorry english and grammar have never been what i was good at.

 

[arivero]

There is a forum similar to PF called "Migui foro" in Spanish. I can not tell about other languages, but sure people can suggest. Same with reading, it is a pity that most of the documentation about advanced physics is in English.

 

[clm321]

oh well its niot that i don't speak english its that I am 17 and don't really try very hard to make sure my grammar is correct

 

[arivero]

Ah, I c. Well my suggestion is that you can browse a little bit here and there in this forum to grasp what do they mean with "dimensions". Of course having a 3rd, 4th, or 21th dimension is not to say that we have new theories for each of them. What it happens is that we have some theories using 4 dimensions (eg General Relativity, special relativity, electromagnetism), some theories using 10 dimensions (superstring theory), some using 11 dimensions (supergravity, m-theory), some using 26...

 

[clm321]

ok thanks that hepls alot.