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A framework for probing gravity and dark energy on cosmological scales

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I will present a new framework for characterizing gravity/dark energy on cosmological scales in a scale-dependent manner. In this work, our motivation was to provide a cosmological analogue of the parameterized post-Newtonian framework to characterize departures from the standard model of cosmology. Our approach provides a common structure for comparing the salient features of different models and their observational consequences. Within the context of our framework, I will discuss a potentially unique signature of braneworld models on cosmological scales.

This talk is part of the Cosmology Lunch series.

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