Accelerating expansion in the swisscheese model
Gyula Bene, Adelinda Csapo
TL;DR
This paper investigates a modified Swiss-cheese cosmological model incorporating spherical regions with Lemaître-Tolman-Bondi metrics to analyze light propagation and its implications for the Hubble diagram.
Contribution
It introduces a version of the Swiss-cheese model with detailed analysis of light propagation, facilitating future numerical studies of cosmological observations.
Findings
Enhanced understanding of light paths in inhomogeneous universes
Potential implications for interpreting the Hubble diagram
Framework for numerical simulations of cosmological models
Abstract
A version of the Swiss-cheese model is investigated. The flat Friedmann-Robertson-Walker (FRW) universe is modified by the addition of several spherical regions with Lemaitre-Tolman-Bondi metric. We discuss light propagation in this model in detail to pave the way for a detailed numerical study of the Hubble diagram.
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Taxonomy
TopicsCosmology and Gravitation Theories · Black Holes and Theoretical Physics · Galaxies: Formation, Evolution, Phenomena