Lensing at cosmological scales: a test of higher dimensional gravity
  Recent developments in gravitational lensing astronomy have paved the way to genuine mappings of the gravitational potential at cosmological scales. We stress that comparing these data with traditional large scale structure surveys will provide us with a test of gravity at such scales. These constraints could be of great importance in the framework of higher dimensional cosmological models. 
Jean-Philippe Uzan (LPT, Orsay) and Francis Bernardeau (SPhT, CEA   Saclay)