1.7k citations · 4.3k across the 14 of their papers we have counts for
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The Large Scale Structure of f(R) Gravity
Yong-Seon Song, Wayne Hu, Ignacy Sawicki
We study the evolution of linear cosmological perturbations in f(R) models of accelerated expansion in the physical frame where the gravitational dynamics are fourth order and the…
Large-Scale Tests of the DGP Model
Yong-Seon Song, Ignacy Sawicki, Wayne Hu
The self-accelerating braneworld model (DGP) can be tested from measurements of the expansion history of the universe and the formation of structure. Current constraints on the exp…
Near-Horizon Solution for DGP Perturbations
Ignacy Sawicki, Yong-Seon Song, Wayne Hu
We develop a scaling ansatz for the master equation in Dvali, Gabadadze, Porrati cosmologies, which allows us to solve the equations of motion for perturbations off the brane durin…