Linking tests of gravity on all scales: From the strong-field regime to cosmology

Tessa Baker, Dimitrios Psaltis, Constantinos Skordis

Research output: Contribution to journalArticle

63 Scopus citations

Abstract

The current effort to test general relativity (GR) employs multiple disparate formalisms for different observables, obscuring the relations between laboratory, astrophysical, and cosmological constraints. To remedy this situation, we develop a parameter space for comparing tests of gravity on all scales in the universe. In particular, we present new methods for linking cosmological large-scale structure, the cosmic microwave background, and gravitational waves with classic PPN tests of gravity. Diagrams of this gravitational parameter space reveal a noticeable untested regime. The untested window, which separates small-scale systems from the troubled cosmological regime, could potentially hide the onset of corrections to GR.

Original languageEnglish (US)
Article number63
JournalAstrophysical Journal
Volume802
Issue number1
DOIs
StatePublished - Mar 20 2015

Keywords

  • dark energy
  • gravitation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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