February 4th
when: Tuesday 04/02/2020, 11:00
where: KE E-541 (møterom)
speaker: Asta Heinesen
title: Inhomogeneous cosmology
abstract:
I will give an introduction to the field of inhomogeneous cosmology focusing on averaging schemes for formulating a large scale cosmological theory from a general relativistic space-time.
An important insight from the averaging formalism discussed is that structure in a relativistic space-time induces violation of the spatial curvature conservation law of the Friedmann-Lemaitre-Robertson-Walker class of models usually used for interpreting cosmological data.
I will mention some theoretical and observational problems of interest in inhomogeneous cosmology and talk about some of my own work in relation to these questions.