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Department of Mathematical Sciences

Seminar Archives

On this page you can find information about seminars in this and previous academic years, where available on the database.

Maths HEP Lunchtime Seminars: Inhomogeneous post-inflationary cosmology

Presented by Ben Withers, Durham

5 November 2010 13:00 in CM221

Observations suggest that we live in an era dominated by positive
cosmological constant. This allows us to characterise inhomogeneous and
anisotropic standard model cosmologies by their future asymptotics, using
a Fefferman-Graham expansion. We argue that this asymptotic expansion
provides a reasonable description of much of the observable universe and
as an example application we show how to constrain the asymptotic data
through supernovae observations. Going further we connect the late time
asymptotic data with early time data using a moduli space expansion. Using
this method we are able to construct solutions for the observable
universe, inhomogeneous on large scales, which automatically build in
inflationary initial conditions.

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information