P<scp>ARTICLE</scp> P<scp>HYSICS</scp> P<scp>ROBES OF</scp> E<scp>XTRA</scp> S<scp>PACETIME</scp> D<scp>IMENSIONS</scp>
P<scp>ARTICLE</scp> P<scp>HYSICS</scp> P<scp>ROBES OF</scp> E<scp>XTRA</scp> S<scp>PACETIME</scp> D<scp>IMENSIONS</scp>
The possibility that spacetime is extended beyond the familiar 3+1-dimensions has intrigued physicists for a century. Indeed, the consequences of a dimensionally richer spacetime would be profound. Recently, new theories with higher dimensional spacetimes have been developed to resolve the hierarchy problem in particle physics. These scenarios make distinct predictions …