Colloquium Ehrenfestii - Anne Davis (University of Cambridge): 'The accelerating Universe'



19:30 hrs


Sitterzaal, Oort building, Leiden


Observations suggest the Universe underwent two periods of accelerated expansion, one at very early times and one today. I will discuss the observations and focus on the recent period of accelerated expansion, discussing a potential explanation in terms of modified gravity and in particular the chameleon mechanism. I will show how a screening mechanism results in gravity being modified in sparse environments, like the cosmos,  but not in the solar system. The implications will be discussed for cosmology, astrophysics and in the laboratory. Experiments searching for such modified gravity theories discussed. 


18 - 23 March 2019

NanoFront Winter Retreat 2019link

2 - 3 April 2019

BioSB2019: Register now!link

6 - 7 June 2019

Casimir Open Days 2019link

24 - 28 June 2019

BioBusiness Summer Schoollink