Causal dynamical triangulations (CDT)
The geometry of spacetime can be calculated with the theory of causal dynamical triangulations.
Explanation
The dimensions in space (length, width, height) and the dimension in time together form the spacetime. In CDT, time enables the notion of causuality − the requirement that cause comes before effect.
In these calculations, the path integral suggests that the universe we see is really a quantum combination of all possible spacetime shapes. In this way, quantum gravity can be understood in accordance with the general theory of relativity.
HistoryGerman physicist Renate Loll (1962) describes spacetime and gravity in this way. |