Talk on "Bouncing Cosmology: the current state and the road ahead" by Dr. Jerome Quintin at QASTM
Channel: Sayantan Choudhury
Date: 30/04/2020

Title: Bouncing Cosmology: the current state and the road ahead

Abstract:

In this talk, we review the current status of some theories of bouncing
cosmology as alternative scenarios for the very early universe. In bouncing
cosmology, one generally explores the possibility of having a non-singular
transition from a `pre-Big Bang' contracting phase to a `post-Big Bang'
expanding universe. In addition to resolving the Big Bang singularity, a
bouncing universe could resolve the usual conundrums of standard Big Bang
cosmology without the need for a period of inflation after the Big Bang. We
review such concepts, with an emphasis given on two aspects: first, we
review some classes of bouncing cosmology that could be viable structure
formation scenarios with respect to observations; second, we review
different approaches to constructing non-singular bounces, i.e., pertaining
to the issue of singularity resolution. In both cases, we highlight the
successes and remaining challenges, and we explore some future avenues in
this field of research.

Speaker: Dr. Jerome Quintin, Theoretical Cosmology Group, Max Planck
Institute for Gravitational Physics (Albert Einstein Institute), Potsdam,
Germany.

Time: 14:00 pm to 15:30 pm (zoom talk)

Date: 30 th April 2020.