München 2009 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
GR: Fachverband Gravitation und Relativitätstheorie
GR 17: Kosmologie II
GR 17.2: Talk
Friday, March 13, 2009, 11:20–11:40, A214
Cosmology and four-dimensional manifolds — •Torsten Aßelmeyer-Maluga1 and Helge Rosé2 — 1Aerospace Center (DLR), Rutherfordstr. 2, 12489 Berlin — 2FhG FIRST, Kekulestr.7, 12489 Berlin
By using the standard model of cosmology, we study possible models for the 4-manifold representing the history since the big bang. The current analysis of the WMAP data by Luminet et.al. (Nature 425 p.593ff, 2003),seem to imply that the spatial component is a compact 3-manifold. We will show that the main restriction of the 4-manifold is the existence of a smooth structure on it. Then we single out an attractive model for the 4-manifold which is the simplest, possible model. The topological model admits at least one phase transition which can be interpreted as inflation. A topological interpretation of the dark energy is also discussed.