出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The recent understanding of string theory opens the possibility that the string
scale can be as low as a few TeV. The apparent weakness of gravitational interactions
can then be accounted by the existence of large internal dimensions, in the submillimeter
region. Furthermore, our world must be con¯ned to live on a brane transverse to these
large dimensions, with which it interacts only gravitationally. In my lecture, I describe
brie°y this scenario which gives a new theoretical framework for solving the gauge hierar-
chy problem and the uni¯cation of all interactions. I also discuss its main properties and
implications for observations at both future particle colliders, and in non-accelerator grav-
ity experiments. Such e®ects are for instance the production of Kaluza-Klein resonances,
graviton emission in the bulk of extra dimensions, and a radical change of gravitational
forces in the submillimeter range.
