ACP Seminar (Astronomy - Cosmology - Particle Physics)

Speaker: Kurt Hinterbichler (Perimeter)
Title: The pseudo-conformal universe
Date (JST): Tue, Oct 16, 2012, 15:30 - 16:30
Place: Seminar Room B
Related File: 785.pdf
Abstract: The pseudo-conformal universe is a framework for the early universe which is an alternative to inflation. As opposed to the de Sitter space of inflation, in this scenario the early universe is a nearly flat Minkowski space with a conformal field theory. Some of the fields of the CFT get a time-dependent VEV, which spontaneously breaks the conformal symmetry down to a de Sitter subgroup. This generates a scale invariant spectrum of perturbations, and solves the standard flatness and horizon problems.