# The universe as a quantum gravity condensate.

### APA

Oriti, D. (2016). The universe as a quantum gravity condensate.. Perimeter Institute. https://pirsa.org/16110048

### MLA

Oriti, Daniele. The universe as a quantum gravity condensate.. Perimeter Institute, Nov. 03, 2016, https://pirsa.org/16110048

### BibTex

@misc{ pirsa_16110048, doi = {10.48660/16110048}, url = {https://pirsa.org/16110048}, author = {Oriti, Daniele}, keywords = {Quantum Gravity}, language = {en}, title = {The universe as a quantum gravity condensate.}, publisher = {Perimeter Institute}, year = {2016}, month = {nov}, note = {PIRSA:16110048 see, \url{https://pirsa.org}} }

Daniele Oriti Ludwig-Maximilians-Universitiät München (LMU)

## Abstract

**I describe how, within the group field theory (GFT) formalism for quantum gravity, we can: **

**1) provide a candidate description of the quantum building blocks of spacetime, bringing together ideas and mathematical structures from other quantum gravity formalisms;**

**2) apply powerful tools from quantum field theory, like the (perturbative and non-perturbative) renormalization group, to establish the quantum consistency of given GFT models and to study their continuum limit and phase structure;**

**3) extract, from the full theory, an effective cosmological dynamics for the universe described as a quantum condensate of GFT building blocks; in the simplest approximation, this dynamics reduces to the Friedmann equations at large scales but replaces the classical big bang singularity with a quantum bounce.**