The superstrings theory is a physics theory which describes subatomic particles as vibrating strings. These strings would be a billiard times smaller than a proton, and the differences in vibration create different particles.
One would generate an electron, another a proton, a third one a photon. In the mid-1980s, the physicist Michael Green and John Schwarz proved that this theory would be able to unify the four forces that govern the universe.
However, it generates such difficult mathematical calculations that it is currently impossible to check them concretely. Benoit endeavoured to give these strings a poetic shape.