## Superstring Unification
(the symbol 10, which explains why the point-particle approximation of ordinary
quantum field theories is so successful. ^{-16}
cmThe second problem -- the extra dimensions -- could also be addressed in this setting. Once one has a theory containing gravitation and generalizing general relativity, one knows that that the geometry of space-time is dynamically determined. One could imagine that, as a consequence of the dynamics, the extra six dimensions form a small compact space attached to each point in ordinary four-dimensional space-time. If the size of the extra dimensions is sufficiently small, there would be no conflict with observations. I found these ideas very exciting and have been pursuing them ever since. However, for the ten year period 1974--1984 only a few colleagues and I pursued these ideas. One who did was Joel Scherk; tragically, he passed away in 1980. Previous |Next |

| Contents | Resolving Contradictions | Supersymmetry | A Brief History of Superstings |

| Basic Ideas of Superstring Theory | Superstring Revolution, part deux |