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.
- Publication:
-
Annalen der Physik
- Pub Date:
- August 2014
- DOI:
- 10.1002/andp.201400058
- arXiv:
- arXiv:1403.4268
- Bibcode:
- 2014AnP...526..259L
- Keywords:
-
- Modified gravity;
- cosmology;
- large-scale structure;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- General Relativity and Quantum Cosmology
- E-Print:
- 24 pages, 5 figures, 1 table