Speaker
Mikko Lavinto
(University of Helsinki)
Description
Inhomogeneous cosmological models are often constructed using the Swiss Cheese scheme. I will show that under certain physical assumptions, backreaction must always be small in these models. However, it is possible to break one of these conditions to construct a consistent (but un-physical) solution where backreaction can be large. Finally I will discuss how supernova observations would be interpreted in such a universe.
Primary author
Mikko Lavinto
(University of Helsinki)
