Constraining chameleon models with cosmology

Abstract

Chameleon fields may modify gravity on cluster scales while recovering general relativity locally. This article reviews signatures of chameleon modifications in the nonlinear cosmological structure, comparing different techniques to model them, summarising the current state of observational constraints, and concluding with an outlook on prospective constraints from future observations and applications of the analytic tools developed in the process to more general scalar-tensor theories. Particular focus is given to the Hu-Sawicki and designer models of f(R) gravity.

24 pages, 5 figures, 1 table; invited review article; v2 matches published version

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Cited by in corpus (8)

• The XMM Cluster Survey: Testing chameleon gravity using the profiles of clusters
• Noether analysis of Scalar-Tensor Cosmology
• Casimir, Gravitational and Neutron Tests of Dark Energy
• The nonlinear dynamical stability of infrared modifications of gravity
• Cosmological tests of modified gravity: constraints on $F(R)$ theories from the galaxy clustering ratio
• Linear perturbations in K-mouflage cosmologies with massive neutrinos
• How chameleons core dwarfs with cusps
• Breaking the Cosmic Degeneracy between Modified Gravity and Massive Neutrinos with the Cosmic Web