1.7k citations · 2.4k across the 3 of their papers we have counts for
3 papers
astro-ph2007★ 416 cited
A Parameterized Post-Friedmann Framework for Modified Gravity
Wayne Hu, Ignacy Sawicki
We develop a parameterized post-Friedmann (PPF) framework which describes three regimes of modified gravity models that accelerate the expansion without dark energy. On large scale…
astro-ph2007★ 1.7k cited
Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
Wayne Hu, Ignacy Sawicki
We study a class of metric-variation f(R) models that accelerates the expansion without a cosmological constant and satisfies both cosmological and solar-system tests in the small-…
astro-ph2007★ 233 cited
Stability of Cosmological Solution in f(R) Models of Gravity
Ignacy Sawicki, Wayne Hu
We reconcile seemingly conflicting statements in the literature about the behavior of cosmological solutions in modified theories of gravity where the Einstein-Hilbert Lagrangian f…