We review the effect of the formation of nonlinear structures on the expansion rate, spatial curvature, and light propagation in the universe, focusing on the possibility that this effect could explain cosmological observations without requiring the introduction of dark energy or modified gravity. We concentrate on explaining the relevant physics and highlighting open questions.
Annual Review of Nuclear and Particle Science
- Pub Date:
- November 2012
- Astrophysics - Cosmology and Extragalactic Astrophysics;
- General Relativity and Quantum Cosmology
- 33 pages, 2 figures, invited review for Annual Review of Nuclear and Particle Science. v2: Updated to closer match published version. Added references, better editing