Vorträge und Posterpräsentationen (ohne Tagungsband-Eintrag):
H. Skarke:
"A non-perturbative approach to inhomogeneous cosmology";
Vortrag: Inhomogeneous Cosmologies,
Torun, Polen;
02.07.2017
- 07.07.2017.
Kurzfassung englisch:
The mass-weighted average has the property that averaging and taking time derivatives
commute. This fact gives it a technical advantage over the more commonly used volume
average and affords numerical computations of a non-perturbative nature. Applying the
resulting framework to a universe with the standard initial conditions (almost perfect homogeneity with only small Gaussian fluctuations) we find that volume evolution in such a universe is not modified significantly by the inhomogeneities, but that light propagation
gets modified in such a way that the observed redshift-distance relations may be explained
without invoking a cosmological constant.
Schlagworte:
Mass-weighted average, cosmological constant, light propagation, redshift-distance relation
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.