Inhomogeneous spacetimes as a dark energy model
David Garfinkle
TL;DR
This paper explores inhomogeneous Tolman-Bondi spacetimes as an alternative dark energy model, demonstrating they can fit supernova data comparably to the standard Lambda-CDM model.
Contribution
It shows that specific parameter choices in inhomogeneous spacetimes can replicate supernova observations without requiring a cosmological constant.
Findings
Inhomogeneous models fit supernova data as well as Lambda-CDM.
Certain parameter configurations replicate observed cosmic acceleration.
The model offers an alternative explanation for dark energy phenomena.
Abstract
Tolman-Bondi inhomogeneous spacetimes are used as a cosmological model for type Ia supernova data. It is found that with certain parameter choices the model fits the data as well as the standard CDM cosmology does.
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