Center of Gravity Seminar: Jan Ambjørn

Title: The emergence of our Universe

Abstract: We show how our Universe can emerge from a symmetry breaking of a multicomponent W_3 algebra, where the components in addition form a Jordan algebra. We discuss how symmetry breaking related to the Jordan algebras H_3(C) and H_3(O) over the complex and octonion numbers can lead to an extended four-dimensional spacetime, where the expansion of the Universe is governed by a modified Friedmann equation. We finally discuss how this modified Friedmann equation might explain a number of puzzling cosmological observations.

We = JA and Yoshiyuki Watabiki