Tales of Gravity

Model Agnostic Tests of Gravity with Large Scale Structure

Not scheduled

2m

Keighton Auditorium (University of Nottingham)

UK Cosmo Flash talks

Speaker

Sankarshana Srinivasan (Ludwig Maximilian University)

Description

Stage IV large scale structure surveys are promising probes of gravity on cosmological scales. Due to the vast model-space in the modified gravity literature, model-independent parameterisations represent useful and scalable ways to test extensions of ΛCDM. In this talk, I will present recent work that shows how one can consistently parameterise and constrain modified gravity models with a redshift-binned clustering strength μ and a gravitational slip η. I will also discuss how one can expand this framework to account for additional complexity in the time and scale dependence of these bins when computing the 3x2pt data vector.