The Parameterized Post-Friedmann Framework for Theories of Modified Gravity: Concepts, Formalism and Examples
A unified framework for theories of modified gravity will be an essential tool for interpreting the forthcoming deluge of cosmological data. We present such a formalism, the Parameterized Post-Friedmann framework (PPF), which parameterizes the cosmological perturbation theory of a wide variety of mo...
| Main Authors: | , , |
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| Format: | Journal article |
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2012
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