July 9, 2020 to January 31, 2025
Europe/Zurich timezone

Modified Gravity and Observational Constraints

Oct 4, 2022, 3:00 PM
1h 20m


Anne-Christine Davis (DAMTP, University of Cambridge)


There has been a lot of interest in theories that modified Einstein gravity but which reduce to general relativity in certain limits. Such modified gravity theories predict the existence of a fifth force. There are severe constraints on fifth forces from solar system observations. However there has been a recent resurgence of interest in modified gravity theories with the advent of sophisticated screening mechanism whereby the fifth force is suppressed in the solar system but not necessarily beyond. I will review some models of modified gravity and display the screening mechanism. I will then discuss how such models can be tested and constrained using laboratory experiments.

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