# Nonperturbative quantum de Sitter universe

@article{Ambjorn2008NonperturbativeQD, title={Nonperturbative quantum de Sitter universe}, author={Jan Ambjorn and Andrzej Goerlich and Jerzy Jurkiewicz and R. Loll}, journal={Physical Review D}, year={2008}, volume={78}, pages={063544} }

The dynamical generation of a four-dimensional classical universe from nothing but fundamental quantum excitations at the Planck scale is a long-standing challenge to theoretical physicists. A candidate theory of quantum gravity which achieves this goal without invoking exotic ingredients or excessive fine-tuning is based on the nonperturbative and background-independent technique of causal dynamical triangulations. We demonstrate in detail how in this approach a macroscopic de Sitter universe…

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