QG meets Dark Energy

Third workshop: Quantum gravity meets dark energy

(22nd to 24th of June)

The 3rd online workshop on quantum gravity focused on the dark-energy frontier from a quantum gravitational perspective. On the one hand, several approaches to quantum gravity have already given rise to conjectures on the nature and properties of dark energy that will be confronted by observational data from a number of surveys in this decade. On the other hand, many modifications of gravity are being proposed to explain the observed properties of dark energy. These classical models provide novel starting points for quantum gravitational research, that will aim at understanding whether they can be UV completed in a given quantum-gravitational framework. Finally, the Hubble tension is providing yet another opportunity for quantum gravity, as early-dark-energy proposals could be motivated from or UV completed within a quantum gravitational perspective.

This 3-day workshop focused on bringing together researchers from a cosmology-background with researchers focusing on quantum gravity for what we hope was a fruitful and inspiring exchange that triggered future progress.

The meeting took place from the 22nd to the 24th of June, 2020, 2pm - 7pm CEST. Invited speakers were:

• Niayesh Afshordi (University of Waterloo & Perimeter Institute)

• Stephon Alexander (Dartmouth College)

• Dario Bettoni (Universidad de Salamanca)

• Robert Brandenberger (McGill University)

• Clare Burrage (Nottingham University)

• Eleonora Di Valentino (University of Manchester)

• Scott Melville (Cambridge University)

• Florian Niedermann (University of Southern Denmark)

• Antonio Pereira (Universidade Federal Fluminense)

• Alejandro Perez (University of Marseille)

• Javier Rubio (University of Helsinki)

• Amanda Weltman (University of Cape Town)

• Timm Wrase (Lehigh University)