Large Scale Structures beyond Newtonian approximation

by Enea Di Dio (UC Berkeley)

Wednesday 12 Jun 2019, 11:30 → 13:00 Europe/Zurich

4/2-011 - TH common room (CERN)

The next generation of LSS surveys will probe almost the whole observable universe at low redshift. To correctly interpret measurements of modes at the horizon scale we need to develop an accurate gauge-invariant description of LSS, beyond the simple Newtonian approximation. In my talk I will present the relativistic description of Large Scale Structure observables, by investigating the relevance of such corrections beyond the Newtonian description. In particular, I will show how to use cross-correlations as a "smoking gun" for relativistic effects detection and how such corrections could potentially contaminate future primordial non-gaussianity measurements. Finally, I will show how to extend perturbation theory within a relativistic framework and how this affects the interpretation of gravitational redshift measurements.