20–22 Sept 2022
Cairo University
Africa/Cairo timezone

The Bianchi-V spacetime with viscous matter and evolving gravitational and cosmological ‘constants’

20 Sept 2022, 14:30
30m
FCAI seminar room (Online) (Cairo University)

FCAI seminar room (Online)

Cairo University

Speaker

Amare Abebe (North-West University)

Description

In this presentation, we discuss the cosmological solutions of the Bianchi type−V spacetime filled with bulk viscous fluid and evolving cosmological Λ and Newtonian G parameters. We show that the model describes a universe that starts off with a negative cosmological term, dominated by non-relativistic matter and decelerated, that eventually becomes dark energy- dominated and hence expanding with acceleration, in concordance with current observations. Ongoing work in this direction will also be briefly discussed.

Author

Amare Abebe (North-West University)

Presentation materials