Emergence of a 4D world from causal quantum gravity.
Causal Dynamical Triangulations in four dimensions provide a background-independent definition of the sum over geometries in nonperturbative quantum gravity, with a positive cosmological constant. We present evidence that a macroscopic four-dimensional world emerges from this theory dynamically.
Ambjørn
J
J
The Niels Bohr Institute, Copenhagen University, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark. ambjorn@nbi.dk
Jurkiewicz
J
J
Loll
R
R