Background Geometry in 4D Causal Dynamical Triangulations
A. Görlich · Jagiellonian University Repository (Jagiellonian University) · 2008
The method of Causal Dynamical Triangulations is a background independent approach to Quantum Gravity. Imposing causal structure of the universe we observe a classical 4D de Sitter spacetime as a "background" geometry. From the study of the spatial volume fluctuations one can determine the effective action for the scale factor. In this approach one obtains a minisuperspace model which has a maximum symmetry by integrating out all degrees of freedom except the scale factor and not by freezing them.