Why is there a difference between big and small according to string theory?

Question

Ok then to make it more clear explain T-duality. Exchange of the momentum modes and winding modes.

Answer 1

I really want to answer this question for you, but I'm going to spare you the lengthy math and try and answer this as simply as possible.

String theory doesn't claim any difference between big and small, rather string theory explains the behavior of small--which is significantly different than big.

In the world we live in, large objects--and when I say large I still mean small--pins, dust, breadcrumbs, cars--all of these are governed by laws that were explained in large part by Einstein and his theories of special and general relativity.

Now, when we get to very very small objects--particles which make up the very substance and matter of each object--quarks, muons, etc, the mathematical properties which explain our world begin to fail.

String theory attempts to unify the large and small by injecting mathematical properties based on a very large assumption. And that is, that everything is made up of tiny vibrating particles, called strings.

For a very good introduction to the subject matter, I suggest you read Elegant Universe, by Brian Greene.

Second, apply to MIT. The graduate physics department here is world-class.

Regards,

Mysstere

Answer 2

Hi. Try this link : http://www.dummies.com/WileyCDA/DummiesArticle/id-3219.html

Answer 3

Because one has more mass...
That's how it always is...