Jerome Quintin
Max Planck Institute for Gravitational Physics - Postdam, Germany

Abstract
In the approach to a singularity in general relativity, spacetime often becomes largely shear dominated and highly anisotropic. Any speculative cosmological scenario with a contracting phase prior to a Big Bounce must therefore address the issue of large anisotropies. In this talk, I will review this anisotropy problem and the status of isotropisation mechanisms in this context, with an emphasis on non-perfect fluids in light of the recent work arXiv:2109.11701 [gr-qc].

2021 November 15, 16:30

IA
Online broadcast (Zoom)