• Jan Ambjorn (NBI)
• Joakim Arnlind (AEI Potsdam)
• Abhay Ashtekar (Penn State)
• Costas Bachas (ENS Paris)
• John Baez (Riverside)
• John Barrett (Nottingham)
• Niklas Beisert (AEI Potsdam)
• Matthias Blau (Bern)
• Guillaume Bossard (Ecole Polytechnique, Paris)
• Ali Chamseddine (Beirut)
• Geoffrey Compere (Amsterdam)
• Ben Craps (Bruxelles)
• Axel de Goursac (Louvain)
• Lance Dixon (SLAC)
• Henriette Elvang (Michigan)
• Laurent Freidel (Perimeter)
• Domenico Giulini (Hannover)
• Stefan Hollands (Cardiff)
• Jens Hoppe (Stockholm)
• Ted Jacobson (Maryland)
• Gandalf Lechner (Vienna)
• Jerzy Lewandowski (Warsaw)
• Renate Loll (Utrecht)
• Roberto Longo (Rome)
• Viatcheslav Mukhanov (Munich)
• Hermann Nicolai (AEI Potsdam)
• Michael Reiterer (ETH Zurich)
• Martin Reuter (Mainz)
• Carlo Rovelli (Marseille)
• Misha Shaposhnikov (EPF Lausanne)
• Harold Steinacker (Vienna)
• Raimar Wulkenhaar (Münster)

We plan to select some additional speakers for short talks during the conference.