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Testing general relativity with cosmology: a synopsis of the parametrized post-Friedmann approach

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Abstract

More than half a century after the Chapel Hill meeting of 1957, the landscape of general relativity has been transformed. In relativistic cosmology we are entering an era in which we can seriously consider testing some of the most fundamental assumptions that go into our view of the Universe. We propose that precision tests of gravity on cosmological scales may be feasible with up-and-coming surveys of galaxies. To achieve the most accurate general constraints yet we briefly describe a formalism which is applicable on the largest scales: the parametrized post-Friedmann approach. We sketch out the steps that need to be taken to link realistic, cosmological observables with fundamental properties of general relativity.

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Acknowledgments

P.G.F. thanks the organisers for the opportunity to talk at one of the iconic meetings in general relativity. T.B. is supported by All Souls College, Oxford. P.G.F. acknowledges support from the Leverhulme Trust, STFC, the Beecroft Institute for Particle Astrophysics and Cosmology, and the Oxford Martin School. C.S. is supported by a Royal Society University Research Fellowship.

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Authors and Affiliations

  1. Astrophysics, University of Oxford, Oxford, OX1 3RH, UK

    Pedro G. Ferreira & Tessa Baker

  2. Department of Physics, University of Cyprus, 1678, Nicosia, Cyprus

    Constantinos Skordis

Authors
  1. Pedro G. Ferreira
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  2. Tessa Baker
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  3. Constantinos Skordis
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Corresponding author

Correspondence to Pedro G. Ferreira.

Additional information

This article belongs to the Topical Collection: The First Century of General Relativity: GR20/Amaldi10. Guest Editors: Jerzy Lewandowski, Bala Iyer, Sheila Rowan.

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Ferreira, P.G., Baker, T. & Skordis, C. Testing general relativity with cosmology: a synopsis of the parametrized post-Friedmann approach. Gen Relativ Gravit 46, 1788 (2014). https://doi.org/10.1007/s10714-014-1788-x

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  • DOI: https://doi.org/10.1007/s10714-014-1788-x

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