Cosmology seminar - Ben Elder

21 Nov 2023
Seminars and colloquia
Beecroft Seminar Room
Denys Wilkinson Building, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH

Ben Elder (Imperial College London)

Seminar series
For more information contact

Natalia Porqueres, Matteo Zennaro

Ben Elder - Searching for dark energy and new gravitational physics in the laboratory

The existence of a small cosmological constant in our universe hints that there is more to gravity than meets the eye. A broad class of theories that modify gravity contain a screening mechanism that makes them particularly difficult to detect.  I will discuss how atom interferometry provides an exciting new window into this type of modified gravity, focusing in particular on the chameleon and the symmetron.  I will put these tests into the context of other short-range tests of gravity, particularly Casimir sensors and atomic spectroscopy.