Relativistic effects beyond linear theory
29.06.2018 11:30 – 12:30
I will discuss the Large Scale Structure power spectrum and bispectrum in a relativistic framework. To first order, a relativistic description includes terms beyond the Kaiser approximation. I will show how they can be isolated by correlating different probes and how to optimise their detection. Moreover, I will explain how some of these effects can bias the parameters which test the deviation from GR. Beyond linear theory, I will show the contamination induced by the relativistic bispectrum on the constraints of primordial non-gaussianity. I will also briefly discuss how to extend relativistic perturbation theory to higher order to describe 2-point statistics on smaller scales.
Lieu
Bâtiment: Ecole de Physique
Salle 234, 24 quai Ernest-Ansermet
Organisé par
Département de physique théoriqueIntervenant-e-s
Enea Di Dio, Berkeleyentrée libre