Friday, February 17, 2006

Hey Ezzie ( http://Serandez.blogspot.com ) first off, thanks for the mention on the round-up. Hopefully it will bring in some new readers that my exceptionally fabulous blog more than deserves ;)

Anyway, regarding your commen on the history of string theory, its something like this. String theory has been around since the early 80's and has been the prospective TOE (theory of everything) since then. Its primary combatant has been a concept called superGravity and the two have been duking it out for Physics supremacy for the past 2 decades. In more recent years, string theory has adopted some new equations that incorporate elements of supersymmetry. This evolution has led to the monicker of the superstring, as it goes beyond what the original string initially entailed.

String theory has been winning for most that while, but recently, since about 1998 ir so, there have been mathematical issues. Apparently, if one were to assume that the elementary strings were to inhabit 10 physical dimensions, as string theorists do, then there is a screw-up. The 10-dimension theory supports FIVE entirely different, yet mathematically feasible string concepts. This is a major tarnish on the reputability of ST as a potential theory. Funny thing is though, that when incorporates the superGravity idea of 11 dimensions, the five strings turn out to be variants of each other.

The evolution then has been:
String theory incorporates suppersymmetry and becomes superstring theory.
Superstring theory incorporates superGravity theory and becomes the mysteriously dubbed "M-theory"

I believe thats where its been since 2001 and where it currently stands.

2 Comments:

At 10:37 AM, Blogger Ezzie said...

Well thanks - that's pretty much how I'd heard it. One thing you should learn... you can insert hyperlinks INTO words when writing a post by clicking on the little chain-link button when selecting a word; then just paste in the link you want. :)

 
At 11:54 AM, Blogger HL Kaye said...

that's a very clear synopsis...
best i've heard it, actually.

grazie.

 

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