Modified Gravity Tomography

Details Modified Gravity Tomography Modified Gravity Tomography

2011-11-28

arxiv.org/abs/1111.6613v3

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 1 figure, minor corrections

Scientific paper

We consider the effect of a scalar field degree of freedom on the dynamics of gravity from small to large scales. We show that the effects of modified gravity can be completely captured by the time variations of the scalar field mass and its coupling to matter. This leads to a parameterisation of modified gravity where local constraints are easy to analyse and large scale scale structure effects apparent.

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