The Possibility of Cosmic Acceleration via Spatial Averaging in Lemaitre-Tolman-Bondi Models
classification
🌌 astro-ph
gr-qc
keywords
accelerationcosmiclemaitre-tolman-bondimodelsapproximationaveragedaveragingconstruct
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We investigate the possible occurrence of a positive cosmic acceleration in a spatially averaged, expanding, unbound Lemaitre-Tolman-Bondi cosmology. By studying an approximation in which the contribution of three-curvature dominates over the matter density, we construct numerical models which exhibit acceleration.
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