String Theory: Formula of the Strong Force

[kexue]

http://www.youtube.com/watch?v=E7FV9aaiwKQ&feature=related" , what mathematical formula are they referring to? (Which is a mathematical formula that describes the strong force and stood at the beginning of string theory research according to this video.)

thanks

 

[Kevin_Axion]

It's the Beta Function: http://en.wikipedia.org/wiki/Beta_function. But it's interpreted as a scattering amplitude so then it's called a Veneziano Amplitude: http://en.wikipedia.org/wiki/Veneziano_amplitude.

 

[kexue]

thanx kevin axion