Warner and his co-authors, Iosif Bena and Dimitrios Toulikas, both at the Institute of Theoretical Physics in France, and Anthony Houppe of the Swiss Federal Institute of Technology Zurich, described ...

While still theoretical and highly debated, the mathematics of string theory suggests that there could be multiple dimensions of time. Columbia University's theoretical physicist Brian Greene ...

String theorists are betting that extra dimensions do indeed exist; in fact, the equations that describe superstring theory require a universe with no fewer than 10 dimensions. But even physicists ...