in string theory it is argued that different vibrations make different particles, but what causes it?

Question

different string vibrations make different particles of matter, but what causes different vibrations string makes, a never ending search it seems.......

Answer 1

11 dimensional string theory has not produced anything.

It is possible that the 7 dimensions of space, (that are not perceived), are mathematical deception, and therefore string theory is a theory of nothing, as you will find if you read the wikipedia article on string theory all the way to the end.

Answer 2

Energy would be the cause of any vibration. Each fundamental particle or string has a fixed amount of energy that causes a particular vibration or osicillation of the string to occur. All matter in the universe exists in something called the quantum field - a field of energy (kind of like a magnetic field). Fluctuations of the energy in this field are the vibrations of the strings. You can use the analogy of the surface of a body of water to imagine it. The surface contains energy that causes ripples, waves, etc of different strengths. The ripples or waves are analogus to the strings.

Answer 3

No one has gotten that far yet and by the way, it's now "The Theory Formally Know as String Theory" .. It's M theory now with membranes and not just strings.